diff --git a/COPYING b/COPYING
index 173ff4925..73e4fc3b5 100644
--- a/COPYING
+++ b/COPYING
@@ -645,7 +645,7 @@ the "copyright" line and a pointer to where the full notice is found.
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 Also add information on how to contact you by electronic and paper mail.
 
@@ -664,14 +664,14 @@ might be different; for a GUI interface, you would use an "about box".
   You should also get your employer (if you work as a programmer) or school,
 if any, to sign a "copyright disclaimer" for the program, if necessary.
 For more information on this, and how to apply and follow the GNU GPL, see
-<http://www.gnu.org/licenses/>.
+<https://www.gnu.org/licenses/>.
 
   The GNU General Public License does not permit incorporating your program
 into proprietary programs.  If your program is a subroutine library, you
 may consider it more useful to permit linking proprietary applications with
 the library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.  But first, please read
-<http://www.gnu.org/philosophy/why-not-lgpl.html>.
+<https://www.gnu.org/philosophy/why-not-lgpl.html>.
 
   In addition, as a special exception, the copyright holders give
 permission to link the code of portions of this program with the
diff --git a/Doxyfile.in b/Doxyfile.in
index 65221a105..2b207bb6a 100644
--- a/Doxyfile.in
+++ b/Doxyfile.in
@@ -20,7 +20,7 @@
 # This tag specifies the encoding used for all characters in the config file
 # that follow. The default is UTF-8 which is also the encoding used for all text
 # before the first occurrence of this tag. Doxygen uses libiconv (or the iconv
-# built into libc) for the transcoding. See http://www.gnu.org/software/libiconv
+# built into libc) for the transcoding. See https://www.gnu.org/software/libiconv
 # for the list of possible encodings.
 # The default value is: UTF-8.
 
@@ -790,7 +790,7 @@ INPUT                  = doc/doxygen/Doxy.page.h \
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
 # libiconv (or the iconv built into libc) for the transcoding. See the libiconv
-# documentation (see: http://www.gnu.org/software/libiconv) for the list of
+# documentation (see: https://www.gnu.org/software/libiconv) for the list of
 # possible encodings.
 # The default value is: UTF-8.
 
@@ -995,7 +995,7 @@ SOURCE_TOOLTIPS        = YES
 # If the USE_HTAGS tag is set to YES then the references to source code will
 # point to the HTML generated by the htags(1) tool instead of doxygen built-in
 # source browser. The htags tool is part of GNU's global source tagging system
-# (see http://www.gnu.org/software/global/global.html). You will need version
+# (see https://www.gnu.org/software/global/global.html). You will need version
 # 4.8.6 or higher.
 #
 # To use it do the following:
diff --git a/m4/ax_check_compile_flag.m4 b/m4/ax_check_compile_flag.m4
index c3a8d695a..5bebe4ed8 100644
--- a/m4/ax_check_compile_flag.m4
+++ b/m4/ax_check_compile_flag.m4
@@ -1,5 +1,5 @@
 # ===========================================================================
-#   http://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html
+#   https://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html
 # ===========================================================================
 #
 # SYNOPSIS
@@ -38,7 +38,7 @@
 #   Public License for more details.
 #
 #   You should have received a copy of the GNU General Public License along
-#   with this program. If not, see <http://www.gnu.org/licenses/>.
+#   with this program. If not, see <https://www.gnu.org/licenses/>.
 #
 #   As a special exception, the respective Autoconf Macro's copyright owner
 #   gives unlimited permission to copy, distribute and modify the configure
diff --git a/m4/ax_check_link_flag.m4 b/m4/ax_check_link_flag.m4
index e2d0d363e..7e1de72b4 100644
--- a/m4/ax_check_link_flag.m4
+++ b/m4/ax_check_link_flag.m4
@@ -1,5 +1,5 @@
 # ===========================================================================
-#    http://www.gnu.org/software/autoconf-archive/ax_check_link_flag.html
+#    https://www.gnu.org/software/autoconf-archive/ax_check_link_flag.html
 # ===========================================================================
 #
 # SYNOPSIS
@@ -38,7 +38,7 @@
 #   Public License for more details.
 #
 #   You should have received a copy of the GNU General Public License along
-#   with this program. If not, see <http://www.gnu.org/licenses/>.
+#   with this program. If not, see <https://www.gnu.org/licenses/>.
 #
 #   As a special exception, the respective Autoconf Macro's copyright owner
 #   gives unlimited permission to copy, distribute and modify the configure
diff --git a/m4/code-coverage.m4 b/m4/code-coverage.m4
index c0b986a2b..ae4f41694 100644
--- a/m4/code-coverage.m4
+++ b/m4/code-coverage.m4
@@ -10,7 +10,7 @@
 # PURPOSE.  See the GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License along 
-# with this program.  If not, see <http://www.gnu.org/licenses/>.
+# with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 AC_DEFUN([AX_CODE_COVERAGE], [
 	dnl Check for --enable-code-coverage
diff --git a/m4/sanitizer.m4 b/m4/sanitizer.m4
index 276f03270..7742ec1d9 100644
--- a/m4/sanitizer.m4
+++ b/m4/sanitizer.m4
@@ -10,7 +10,7 @@
 # PURPOSE.  See the GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License along
-# with this program.  If not, see <http://www.gnu.org/licenses/>.
+# with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 #
 # Processes --with-sanitizer, --with-fuzzer, and --with-oss-fuzz flags, checks
diff --git a/src/contrib/asan.h b/src/contrib/asan.h
index 112f81e44..028e9992d 100644
--- a/src/contrib/asan.h
+++ b/src/contrib/asan.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/contrib/base32hex.c b/src/contrib/base32hex.c
index 56fb42755..a3fd2fcca 100644
--- a/src/contrib/base32hex.c
+++ b/src/contrib/base32hex.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "contrib/base32hex.h"
diff --git a/src/contrib/base32hex.h b/src/contrib/base32hex.h
index 027acd8d7..5802e3443 100644
--- a/src/contrib/base32hex.h
+++ b/src/contrib/base32hex.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \brief Base32hex implementation (RFC 4648).
diff --git a/src/contrib/base64.c b/src/contrib/base64.c
index a0d83a492..44b4ce4ec 100644
--- a/src/contrib/base64.c
+++ b/src/contrib/base64.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "contrib/base64.h"
diff --git a/src/contrib/base64.h b/src/contrib/base64.h
index 611574ea2..a9c734b0b 100644
--- a/src/contrib/base64.h
+++ b/src/contrib/base64.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \brief Base64 implementation (RFC 4648).
diff --git a/src/contrib/ctype.h b/src/contrib/ctype.h
index 93b85dbc0..69b7e6387 100644
--- a/src/contrib/ctype.h
+++ b/src/contrib/ctype.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \brief Locale-independent ctype functions.
diff --git a/src/contrib/dnstap/convert.c b/src/contrib/dnstap/convert.c
index f59bacd72..3371b259a 100644
--- a/src/contrib/dnstap/convert.c
+++ b/src/contrib/dnstap/convert.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <sys/socket.h>
diff --git a/src/contrib/dnstap/convert.h b/src/contrib/dnstap/convert.h
index bf00ffb6c..fa69f69ad 100644
--- a/src/contrib/dnstap/convert.h
+++ b/src/contrib/dnstap/convert.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \brief Dnstap identifiers conversions.
diff --git a/src/contrib/dnstap/dnstap.c b/src/contrib/dnstap/dnstap.c
index 9e24eacb2..1f39a485f 100644
--- a/src/contrib/dnstap/dnstap.c
+++ b/src/contrib/dnstap/dnstap.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdint.h>
diff --git a/src/contrib/dnstap/dnstap.h b/src/contrib/dnstap/dnstap.h
index 41e5f6593..be6a4111e 100644
--- a/src/contrib/dnstap/dnstap.h
+++ b/src/contrib/dnstap/dnstap.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \author Robert Edmonds <edmonds@fsi.io>
diff --git a/src/contrib/dnstap/message.c b/src/contrib/dnstap/message.c
index 0b41e9d0e..a5f798e2b 100644
--- a/src/contrib/dnstap/message.c
+++ b/src/contrib/dnstap/message.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <netinet/in.h>
diff --git a/src/contrib/dnstap/message.h b/src/contrib/dnstap/message.h
index 11a967d97..8d4a35fa2 100644
--- a/src/contrib/dnstap/message.h
+++ b/src/contrib/dnstap/message.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \author Robert Edmonds <edmonds@fsi.io>
diff --git a/src/contrib/dnstap/reader.c b/src/contrib/dnstap/reader.c
index 593c6ec93..7b98c1bd6 100644
--- a/src/contrib/dnstap/reader.c
+++ b/src/contrib/dnstap/reader.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdint.h>
diff --git a/src/contrib/dnstap/reader.h b/src/contrib/dnstap/reader.h
index c8cda268f..5ac151d97 100644
--- a/src/contrib/dnstap/reader.h
+++ b/src/contrib/dnstap/reader.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \brief Dnstap file reader.
diff --git a/src/contrib/dnstap/writer.c b/src/contrib/dnstap/writer.c
index 08f45195c..03961c128 100644
--- a/src/contrib/dnstap/writer.c
+++ b/src/contrib/dnstap/writer.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdint.h>
diff --git a/src/contrib/dnstap/writer.h b/src/contrib/dnstap/writer.h
index 4fe7326b3..a34c1368f 100644
--- a/src/contrib/dnstap/writer.h
+++ b/src/contrib/dnstap/writer.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \author Robert Edmonds <edmonds@fsi.io>
diff --git a/src/contrib/dynarray.h b/src/contrib/dynarray.h
index 79eab311b..211a18e27 100644
--- a/src/contrib/dynarray.h
+++ b/src/contrib/dynarray.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \brief Simple write-once allocation-optimal dynamic array.
diff --git a/src/contrib/files.c b/src/contrib/files.c
index 3181386c1..91b93765d 100644
--- a/src/contrib/files.c
+++ b/src/contrib/files.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/contrib/files.h b/src/contrib/files.h
index c4c681f86..d7e6e9699 100644
--- a/src/contrib/files.h
+++ b/src/contrib/files.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/contrib/getline.c b/src/contrib/getline.c
index 074c511ae..0cfbde998 100644
--- a/src/contrib/getline.c
+++ b/src/contrib/getline.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 // FreeBSD POSIX2008 getline
diff --git a/src/contrib/getline.h b/src/contrib/getline.h
index 11c7fe36c..8a3abbe99 100644
--- a/src/contrib/getline.h
+++ b/src/contrib/getline.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \brief Multiplatform getline wrapper.
diff --git a/src/contrib/macros.h b/src/contrib/macros.h
index 1db224189..febb5333e 100644
--- a/src/contrib/macros.h
+++ b/src/contrib/macros.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \brief Common macros.
diff --git a/src/contrib/mempattern.c b/src/contrib/mempattern.c
index 74add91f5..f57139d35 100644
--- a/src/contrib/mempattern.c
+++ b/src/contrib/mempattern.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdlib.h>
diff --git a/src/contrib/mempattern.h b/src/contrib/mempattern.h
index 1c5d9a229..e019d2b14 100644
--- a/src/contrib/mempattern.h
+++ b/src/contrib/mempattern.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \brief Memory allocation related functions.
diff --git a/src/contrib/net.c b/src/contrib/net.c
index 81fc8eff4..e21461b83 100644
--- a/src/contrib/net.c
+++ b/src/contrib/net.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/contrib/net.h b/src/contrib/net.h
index 1b6b527ee..8f7094e41 100644
--- a/src/contrib/net.h
+++ b/src/contrib/net.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/contrib/qp-trie/trie.c b/src/contrib/qp-trie/trie.c
index 4e216fa65..51e776635 100644
--- a/src/contrib/qp-trie/trie.c
+++ b/src/contrib/qp-trie/trie.c
@@ -12,7 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
     The code originated from https://github.com/fanf2/qp/blob/master/qp.c
     at revision 5f6d93753.
diff --git a/src/contrib/qp-trie/trie.h b/src/contrib/qp-trie/trie.h
index 9b00b0363..e83f2a57b 100644
--- a/src/contrib/qp-trie/trie.h
+++ b/src/contrib/qp-trie/trie.h
@@ -12,7 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/contrib/sockaddr.c b/src/contrib/sockaddr.c
index d569292d4..fe3622802 100644
--- a/src/contrib/sockaddr.c
+++ b/src/contrib/sockaddr.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdio.h>
diff --git a/src/contrib/sockaddr.h b/src/contrib/sockaddr.h
index 0fbf1ab3a..3e640c0cb 100644
--- a/src/contrib/sockaddr.h
+++ b/src/contrib/sockaddr.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/contrib/string.c b/src/contrib/string.c
index 6e0eea906..1ff10ed65 100644
--- a/src/contrib/string.c
+++ b/src/contrib/string.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdarg.h>
diff --git a/src/contrib/string.h b/src/contrib/string.h
index 19c74c722..c93a16452 100644
--- a/src/contrib/string.h
+++ b/src/contrib/string.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \brief String manipulations.
diff --git a/src/contrib/strtonum.h b/src/contrib/strtonum.h
index 6cfe8bb13..02ab961cf 100644
--- a/src/contrib/strtonum.h
+++ b/src/contrib/strtonum.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/contrib/time.c b/src/contrib/time.c
index 2b26d5485..e5e241236 100644
--- a/src/contrib/time.c
+++ b/src/contrib/time.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/contrib/time.h b/src/contrib/time.h
index 55b87275b..61dd43bed 100644
--- a/src/contrib/time.h
+++ b/src/contrib/time.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/contrib/tolower.h b/src/contrib/tolower.h
index 8f551826a..3b692ceaa 100644
--- a/src/contrib/tolower.h
+++ b/src/contrib/tolower.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \brief Table for converting ASCII characters to lowercase.
diff --git a/src/contrib/trim.h b/src/contrib/trim.h
index c1b83fad8..a8937f5e4 100644
--- a/src/contrib/trim.h
+++ b/src/contrib/trim.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 /*!
  * \brief Heap memory trimmer.
diff --git a/src/contrib/ucw/heap.h b/src/contrib/ucw/heap.h
index 7419b34f4..9064280cc 100644
--- a/src/contrib/ucw/heap.h
+++ b/src/contrib/ucw/heap.h
@@ -11,7 +11,7 @@
  *  GNU General Public License for more details.
  *
  *  You should have received a copy of the GNU General Public License
- *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/contrib/wire_ctx.h b/src/contrib/wire_ctx.h
index 25ff143ad..f08ca0778 100644
--- a/src/contrib/wire_ctx.h
+++ b/src/contrib/wire_ctx.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/common/evsched.c b/src/knot/common/evsched.c
index 798e4271a..8b2809398 100644
--- a/src/knot/common/evsched.c
+++ b/src/knot/common/evsched.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <sys/time.h>
diff --git a/src/knot/common/evsched.h b/src/knot/common/evsched.h
index bea216d44..7630efff2 100644
--- a/src/knot/common/evsched.h
+++ b/src/knot/common/evsched.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \brief Event scheduler.
diff --git a/src/knot/common/fdset.c b/src/knot/common/fdset.c
index 3d78fdf1c..bb836709a 100644
--- a/src/knot/common/fdset.c
+++ b/src/knot/common/fdset.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdlib.h>
diff --git a/src/knot/common/fdset.h b/src/knot/common/fdset.h
index 2d5ce0251..cfcca8a5a 100644
--- a/src/knot/common/fdset.h
+++ b/src/knot/common/fdset.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \brief I/O multiplexing with context and timeouts for each fd.
diff --git a/src/knot/common/log.c b/src/knot/common/log.c
index 8a35f3729..3024256d4 100644
--- a/src/knot/common/log.c
+++ b/src/knot/common/log.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdarg.h>
diff --git a/src/knot/common/log.h b/src/knot/common/log.h
index 94b6b39a1..5c0f3345d 100644
--- a/src/knot/common/log.h
+++ b/src/knot/common/log.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \brief Logging facility.
diff --git a/src/knot/common/process.c b/src/knot/common/process.c
index 4a4661380..1273ce4c4 100644
--- a/src/knot/common/process.c
+++ b/src/knot/common/process.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <errno.h>
diff --git a/src/knot/common/process.h b/src/knot/common/process.h
index 04fbc3a37..3ff854cb4 100644
--- a/src/knot/common/process.h
+++ b/src/knot/common/process.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \brief Functions for POSIX process handling.
diff --git a/src/knot/common/ref.c b/src/knot/common/ref.c
index 5f188e47b..97a144cb3 100644
--- a/src/knot/common/ref.c
+++ b/src/knot/common/ref.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdio.h>
diff --git a/src/knot/common/ref.h b/src/knot/common/ref.h
index 5f5ec971e..b20d46d73 100644
--- a/src/knot/common/ref.h
+++ b/src/knot/common/ref.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \brief Atomic reference counting structures.
diff --git a/src/knot/common/stats.c b/src/knot/common/stats.c
index 8f49bf9d7..918e0b60a 100644
--- a/src/knot/common/stats.c
+++ b/src/knot/common/stats.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <inttypes.h>
diff --git a/src/knot/common/stats.h b/src/knot/common/stats.h
index 3ce73c6e2..9bf17dacc 100644
--- a/src/knot/common/stats.h
+++ b/src/knot/common/stats.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \brief Server statistics general API.
diff --git a/src/knot/conf/base.c b/src/knot/conf/base.c
index c6d87ab28..29e83205d 100644
--- a/src/knot/conf/base.c
+++ b/src/knot/conf/base.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <string.h>
diff --git a/src/knot/conf/base.h b/src/knot/conf/base.h
index 31f307994..e135a6e54 100644
--- a/src/knot/conf/base.h
+++ b/src/knot/conf/base.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/knot/conf/conf.c b/src/knot/conf/conf.c
index 8909588f1..e3c736347 100644
--- a/src/knot/conf/conf.c
+++ b/src/knot/conf/conf.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/knot/conf/conf.h b/src/knot/conf/conf.h
index bc3183e14..1c5850f0b 100644
--- a/src/knot/conf/conf.h
+++ b/src/knot/conf/conf.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/knot/conf/confdb.c b/src/knot/conf/confdb.c
index 364142ad8..e54d79c1a 100644
--- a/src/knot/conf/confdb.c
+++ b/src/knot/conf/confdb.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/knot/conf/confdb.h b/src/knot/conf/confdb.h
index 04e222d8b..553d4e5d0 100644
--- a/src/knot/conf/confdb.h
+++ b/src/knot/conf/confdb.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/knot/conf/confio.c b/src/knot/conf/confio.c
index b64b27924..b85396ae6 100644
--- a/src/knot/conf/confio.c
+++ b/src/knot/conf/confio.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/knot/conf/confio.h b/src/knot/conf/confio.h
index 460bfbd2a..c85da4465 100644
--- a/src/knot/conf/confio.h
+++ b/src/knot/conf/confio.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/knot/conf/migration.c b/src/knot/conf/migration.c
index a15edaef9..a1e0c6094 100644
--- a/src/knot/conf/migration.c
+++ b/src/knot/conf/migration.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "knot/common/log.h"
diff --git a/src/knot/conf/migration.h b/src/knot/conf/migration.h
index c885ff4b5..8a3d8020a 100644
--- a/src/knot/conf/migration.h
+++ b/src/knot/conf/migration.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/knot/conf/module.c b/src/knot/conf/module.c
index 6bb013f69..ef4648b06 100644
--- a/src/knot/conf/module.c
+++ b/src/knot/conf/module.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <dlfcn.h>
diff --git a/src/knot/conf/module.h b/src/knot/conf/module.h
index 2dc353a91..4a722668a 100644
--- a/src/knot/conf/module.h
+++ b/src/knot/conf/module.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/knot/conf/schema.c b/src/knot/conf/schema.c
index 34743571a..95cfa1fe8 100644
--- a/src/knot/conf/schema.c
+++ b/src/knot/conf/schema.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <limits.h>
diff --git a/src/knot/conf/schema.h b/src/knot/conf/schema.h
index 533215cb4..63066c785 100644
--- a/src/knot/conf/schema.h
+++ b/src/knot/conf/schema.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/knot/conf/tools.c b/src/knot/conf/tools.c
index d570ac7cf..c694d438d 100644
--- a/src/knot/conf/tools.c
+++ b/src/knot/conf/tools.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <glob.h>
diff --git a/src/knot/conf/tools.h b/src/knot/conf/tools.h
index 5283c0f30..0a055079d 100644
--- a/src/knot/conf/tools.h
+++ b/src/knot/conf/tools.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/knot/ctl/commands.c b/src/knot/ctl/commands.c
index 2794b7fe4..830d1462c 100644
--- a/src/knot/ctl/commands.c
+++ b/src/knot/ctl/commands.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <string.h>
diff --git a/src/knot/ctl/commands.h b/src/knot/ctl/commands.h
index 8b6e35131..55554240b 100644
--- a/src/knot/ctl/commands.h
+++ b/src/knot/ctl/commands.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/ctl/process.c b/src/knot/ctl/process.c
index d845bed91..51ded984a 100644
--- a/src/knot/ctl/process.c
+++ b/src/knot/ctl/process.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "contrib/mempattern.h"
diff --git a/src/knot/ctl/process.h b/src/knot/ctl/process.h
index 8236bfcaf..ab0f75f26 100644
--- a/src/knot/ctl/process.h
+++ b/src/knot/ctl/process.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/dnssec/context.c b/src/knot/dnssec/context.c
index f617326cd..ed1429f4d 100644
--- a/src/knot/dnssec/context.c
+++ b/src/knot/dnssec/context.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdio.h>
diff --git a/src/knot/dnssec/context.h b/src/knot/dnssec/context.h
index 77174c2d9..2d7da3712 100644
--- a/src/knot/dnssec/context.h
+++ b/src/knot/dnssec/context.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/knot/dnssec/ds_query.c b/src/knot/dnssec/ds_query.c
index c560c4442..df6439674 100644
--- a/src/knot/dnssec/ds_query.c
+++ b/src/knot/dnssec/ds_query.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/dnssec/ds_query.h b/src/knot/dnssec/ds_query.h
index 5ef40a486..bd76fd012 100644
--- a/src/knot/dnssec/ds_query.h
+++ b/src/knot/dnssec/ds_query.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/dnssec/kasp/kasp_db.c b/src/knot/dnssec/kasp/kasp_db.c
index 7b481156e..2d4235903 100644
--- a/src/knot/dnssec/kasp/kasp_db.c
+++ b/src/knot/dnssec/kasp/kasp_db.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "knot/dnssec/kasp/kasp_db.h"
diff --git a/src/knot/dnssec/kasp/kasp_db.h b/src/knot/dnssec/kasp/kasp_db.h
index a6f1b97bb..a80c4b458 100644
--- a/src/knot/dnssec/kasp/kasp_db.h
+++ b/src/knot/dnssec/kasp/kasp_db.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/knot/dnssec/kasp/kasp_zone.c b/src/knot/dnssec/kasp/kasp_zone.c
index 57a435ee4..26bfaf2de 100644
--- a/src/knot/dnssec/kasp/kasp_zone.c
+++ b/src/knot/dnssec/kasp/kasp_zone.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "knot/dnssec/kasp/kasp_zone.h"
diff --git a/src/knot/dnssec/kasp/kasp_zone.h b/src/knot/dnssec/kasp/kasp_zone.h
index 83eaea2d9..94cbe18b9 100644
--- a/src/knot/dnssec/kasp/kasp_zone.h
+++ b/src/knot/dnssec/kasp/kasp_zone.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/knot/dnssec/kasp/keystate.c b/src/knot/dnssec/kasp/keystate.c
index acf7ceecf..ff527a82e 100644
--- a/src/knot/dnssec/kasp/keystate.c
+++ b/src/knot/dnssec/kasp/keystate.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "knot/dnssec/kasp/keystate.h"
diff --git a/src/knot/dnssec/kasp/keystate.h b/src/knot/dnssec/kasp/keystate.h
index 9da9f140b..749aeb896 100644
--- a/src/knot/dnssec/kasp/keystate.h
+++ b/src/knot/dnssec/kasp/keystate.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/knot/dnssec/kasp/keystore.c b/src/knot/dnssec/kasp/keystore.c
index 96dee8f26..483fe3438 100644
--- a/src/knot/dnssec/kasp/keystore.c
+++ b/src/knot/dnssec/kasp/keystore.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/knot/dnssec/kasp/keystore.h b/src/knot/dnssec/kasp/keystore.h
index 028d6fc46..f08e0c40b 100644
--- a/src/knot/dnssec/kasp/keystore.h
+++ b/src/knot/dnssec/kasp/keystore.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/knot/dnssec/kasp/policy.h b/src/knot/dnssec/kasp/policy.h
index 2ce236e5d..0628d71be 100644
--- a/src/knot/dnssec/kasp/policy.h
+++ b/src/knot/dnssec/kasp/policy.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/knot/dnssec/key-events.c b/src/knot/dnssec/key-events.c
index 6d5ca4fd8..8b6d2555f 100644
--- a/src/knot/dnssec/key-events.c
+++ b/src/knot/dnssec/key-events.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/dnssec/key-events.h b/src/knot/dnssec/key-events.h
index fffbfbc67..fdc96b41e 100644
--- a/src/knot/dnssec/key-events.h
+++ b/src/knot/dnssec/key-events.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/dnssec/nsec-chain.c b/src/knot/dnssec/nsec-chain.c
index c3a8b3e17..6ffb559db 100644
--- a/src/knot/dnssec/nsec-chain.c
+++ b/src/knot/dnssec/nsec-chain.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/dnssec/nsec-chain.h b/src/knot/dnssec/nsec-chain.h
index a2f102e54..b0c7fa764 100644
--- a/src/knot/dnssec/nsec-chain.h
+++ b/src/knot/dnssec/nsec-chain.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/dnssec/nsec3-chain.c b/src/knot/dnssec/nsec3-chain.c
index 534db6ceb..8fe26f0a5 100644
--- a/src/knot/dnssec/nsec3-chain.c
+++ b/src/knot/dnssec/nsec3-chain.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/dnssec/nsec3-chain.h b/src/knot/dnssec/nsec3-chain.h
index 6dafc88a5..1328f847a 100644
--- a/src/knot/dnssec/nsec3-chain.h
+++ b/src/knot/dnssec/nsec3-chain.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/dnssec/policy.c b/src/knot/dnssec/policy.c
index b695b2b7a..bda881b6d 100644
--- a/src/knot/dnssec/policy.c
+++ b/src/knot/dnssec/policy.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/knot/dnssec/policy.h b/src/knot/dnssec/policy.h
index b6ba4d177..ef2a3d3ed 100644
--- a/src/knot/dnssec/policy.h
+++ b/src/knot/dnssec/policy.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/knot/dnssec/rrset-sign.c b/src/knot/dnssec/rrset-sign.c
index d8c91c396..5ac0f1636 100644
--- a/src/knot/dnssec/rrset-sign.c
+++ b/src/knot/dnssec/rrset-sign.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/dnssec/rrset-sign.h b/src/knot/dnssec/rrset-sign.h
index 7a29e1add..4898622eb 100644
--- a/src/knot/dnssec/rrset-sign.h
+++ b/src/knot/dnssec/rrset-sign.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/dnssec/zone-events.c b/src/knot/dnssec/zone-events.c
index 3f7d1ae2a..080dbace4 100644
--- a/src/knot/dnssec/zone-events.c
+++ b/src/knot/dnssec/zone-events.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/dnssec/zone-events.h b/src/knot/dnssec/zone-events.h
index 3bfd20ae6..be44cf824 100644
--- a/src/knot/dnssec/zone-events.h
+++ b/src/knot/dnssec/zone-events.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/dnssec/zone-keys.c b/src/knot/dnssec/zone-keys.c
index 328ed6922..7693a5c59 100644
--- a/src/knot/dnssec/zone-keys.c
+++ b/src/knot/dnssec/zone-keys.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/dnssec/zone-keys.h b/src/knot/dnssec/zone-keys.h
index 4de59cc1b..e7a9b6003 100644
--- a/src/knot/dnssec/zone-keys.h
+++ b/src/knot/dnssec/zone-keys.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/dnssec/zone-nsec.c b/src/knot/dnssec/zone-nsec.c
index 020f367cc..f37057fe5 100644
--- a/src/knot/dnssec/zone-nsec.c
+++ b/src/knot/dnssec/zone-nsec.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/dnssec/zone-nsec.h b/src/knot/dnssec/zone-nsec.h
index a1e469bf9..e271e2bfa 100644
--- a/src/knot/dnssec/zone-nsec.h
+++ b/src/knot/dnssec/zone-nsec.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/dnssec/zone-sign.c b/src/knot/dnssec/zone-sign.c
index 76106da7e..de7ee6fe5 100644
--- a/src/knot/dnssec/zone-sign.c
+++ b/src/knot/dnssec/zone-sign.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/dnssec/zone-sign.h b/src/knot/dnssec/zone-sign.h
index 33c0a60c4..22b4e6482 100644
--- a/src/knot/dnssec/zone-sign.h
+++ b/src/knot/dnssec/zone-sign.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/events/events.c b/src/knot/events/events.c
index 954c5165e..d63e0e6d1 100644
--- a/src/knot/events/events.c
+++ b/src/knot/events/events.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/knot/events/events.h b/src/knot/events/events.h
index a95db3203..e6bddaa75 100644
--- a/src/knot/events/events.h
+++ b/src/knot/events/events.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/knot/events/handlers.h b/src/knot/events/handlers.h
index a103e4247..ca50ccbca 100644
--- a/src/knot/events/handlers.h
+++ b/src/knot/events/handlers.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/events/handlers/dnssec.c b/src/knot/events/handlers/dnssec.c
index 100beb7c1..9c2adc895 100644
--- a/src/knot/events/handlers/dnssec.c
+++ b/src/knot/events/handlers/dnssec.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/events/handlers/expire.c b/src/knot/events/handlers/expire.c
index 16e904d9c..822c04663 100644
--- a/src/knot/events/handlers/expire.c
+++ b/src/knot/events/handlers/expire.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/events/handlers/flush.c b/src/knot/events/handlers/flush.c
index 227205daa..96f061fa4 100644
--- a/src/knot/events/handlers/flush.c
+++ b/src/knot/events/handlers/flush.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/events/handlers/freeze_thaw.c b/src/knot/events/handlers/freeze_thaw.c
index 1df3adffb..452e5f8a9 100644
--- a/src/knot/events/handlers/freeze_thaw.c
+++ b/src/knot/events/handlers/freeze_thaw.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "contrib/macros.h"
diff --git a/src/knot/events/handlers/load.c b/src/knot/events/handlers/load.c
index db2296cb4..7cef3f94f 100644
--- a/src/knot/events/handlers/load.c
+++ b/src/knot/events/handlers/load.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/events/handlers/notify.c b/src/knot/events/handlers/notify.c
index bcd81bfe1..e895ec788 100644
--- a/src/knot/events/handlers/notify.c
+++ b/src/knot/events/handlers/notify.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/events/handlers/nsec3resalt.c b/src/knot/events/handlers/nsec3resalt.c
index 479e0b172..6c106cad8 100644
--- a/src/knot/events/handlers/nsec3resalt.c
+++ b/src/knot/events/handlers/nsec3resalt.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "knot/dnssec/context.h"
diff --git a/src/knot/events/handlers/parent_ds_query.c b/src/knot/events/handlers/parent_ds_query.c
index 6bd37853a..6f4f83205 100644
--- a/src/knot/events/handlers/parent_ds_query.c
+++ b/src/knot/events/handlers/parent_ds_query.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "knot/common/log.h"
diff --git a/src/knot/events/handlers/refresh.c b/src/knot/events/handlers/refresh.c
index 9bc549836..a3426c744 100644
--- a/src/knot/events/handlers/refresh.c
+++ b/src/knot/events/handlers/refresh.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/events/handlers/update.c b/src/knot/events/handlers/update.c
index 6478364ae..851d83255 100644
--- a/src/knot/events/handlers/update.c
+++ b/src/knot/events/handlers/update.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/events/log.c b/src/knot/events/log.c
index 0a1c8d1dd..6c819f130 100644
--- a/src/knot/events/log.c
+++ b/src/knot/events/log.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "knot/events/log.h"
diff --git a/src/knot/events/log.h b/src/knot/events/log.h
index 536a1e299..aa10d9279 100644
--- a/src/knot/events/log.h
+++ b/src/knot/events/log.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/events/replan.c b/src/knot/events/replan.c
index a3f6fcd97..d6080a41d 100644
--- a/src/knot/events/replan.c
+++ b/src/knot/events/replan.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/knot/events/replan.h b/src/knot/events/replan.h
index 05e311282..cd2cb3216 100644
--- a/src/knot/events/replan.h
+++ b/src/knot/events/replan.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/knot/include/module.h b/src/knot/include/module.h
index dd9118b22..d2a1c5cdf 100644
--- a/src/knot/include/module.h
+++ b/src/knot/include/module.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/knot/journal/chgset_ctx.c b/src/knot/journal/chgset_ctx.c
index 092bacf96..1084ecafa 100644
--- a/src/knot/journal/chgset_ctx.c
+++ b/src/knot/journal/chgset_ctx.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "chgset_ctx.h"
diff --git a/src/knot/journal/chgset_ctx.h b/src/knot/journal/chgset_ctx.h
index 22e190308..16ffa99da 100644
--- a/src/knot/journal/chgset_ctx.h
+++ b/src/knot/journal/chgset_ctx.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/journal/journal.c b/src/knot/journal/journal.c
index 388e7930e..6507e4e35 100644
--- a/src/knot/journal/journal.c
+++ b/src/knot/journal/journal.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <inttypes.h>
diff --git a/src/knot/journal/journal.h b/src/knot/journal/journal.h
index b21325212..e42a60d59 100644
--- a/src/knot/journal/journal.h
+++ b/src/knot/journal/journal.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/journal/serialization.c b/src/knot/journal/serialization.c
index 75e18a2a9..ae91b2f6c 100644
--- a/src/knot/journal/serialization.c
+++ b/src/knot/journal/serialization.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/journal/serialization.h b/src/knot/journal/serialization.h
index 550bd1ca5..04afe394b 100644
--- a/src/knot/journal/serialization.h
+++ b/src/knot/journal/serialization.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/modules/cookies/cookies.c b/src/knot/modules/cookies/cookies.c
index 996c80d6a..5641ffff3 100644
--- a/src/knot/modules/cookies/cookies.c
+++ b/src/knot/modules/cookies/cookies.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <pthread.h>
diff --git a/src/knot/modules/dnsproxy/dnsproxy.c b/src/knot/modules/dnsproxy/dnsproxy.c
index 7d378a345..22460443c 100644
--- a/src/knot/modules/dnsproxy/dnsproxy.c
+++ b/src/knot/modules/dnsproxy/dnsproxy.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "contrib/net.h"
diff --git a/src/knot/modules/dnstap/dnstap.c b/src/knot/modules/dnstap/dnstap.c
index 976f43ffe..8c9120234 100644
--- a/src/knot/modules/dnstap/dnstap.c
+++ b/src/knot/modules/dnstap/dnstap.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <netinet/in.h>
diff --git a/src/knot/modules/geoip/geodb.c b/src/knot/modules/geoip/geodb.c
index c374c6fd9..4ebc329f4 100644
--- a/src/knot/modules/geoip/geodb.c
+++ b/src/knot/modules/geoip/geodb.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "knot/modules/geoip/geodb.h"
diff --git a/src/knot/modules/geoip/geodb.h b/src/knot/modules/geoip/geodb.h
index 80940d3ec..257fae6fb 100644
--- a/src/knot/modules/geoip/geodb.h
+++ b/src/knot/modules/geoip/geodb.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/modules/geoip/geoip.c b/src/knot/modules/geoip/geoip.c
index 269e2efce..32728efd1 100644
--- a/src/knot/modules/geoip/geoip.c
+++ b/src/knot/modules/geoip/geoip.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdio.h>
diff --git a/src/knot/modules/noudp/noudp.c b/src/knot/modules/noudp/noudp.c
index c2f064aed..8d5597167 100644
--- a/src/knot/modules/noudp/noudp.c
+++ b/src/knot/modules/noudp/noudp.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "knot/include/module.h"
diff --git a/src/knot/modules/onlinesign/nsec_next.c b/src/knot/modules/onlinesign/nsec_next.c
index 1314154ea..a5d6ca3c8 100644
--- a/src/knot/modules/onlinesign/nsec_next.c
+++ b/src/knot/modules/onlinesign/nsec_next.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/knot/modules/onlinesign/nsec_next.h b/src/knot/modules/onlinesign/nsec_next.h
index 4d9a6c46d..43f01c10e 100644
--- a/src/knot/modules/onlinesign/nsec_next.h
+++ b/src/knot/modules/onlinesign/nsec_next.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/knot/modules/onlinesign/onlinesign.c b/src/knot/modules/onlinesign/onlinesign.c
index 4f9331986..b6cce5bb8 100644
--- a/src/knot/modules/onlinesign/onlinesign.c
+++ b/src/knot/modules/onlinesign/onlinesign.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/knot/modules/rrl/functions.c b/src/knot/modules/rrl/functions.c
index 0b2bc26fa..4d487c0d5 100644
--- a/src/knot/modules/rrl/functions.c
+++ b/src/knot/modules/rrl/functions.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/modules/rrl/functions.h b/src/knot/modules/rrl/functions.h
index 21c88a76d..c5f3f19cf 100644
--- a/src/knot/modules/rrl/functions.h
+++ b/src/knot/modules/rrl/functions.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/modules/rrl/rrl.c b/src/knot/modules/rrl/rrl.c
index 46571b122..7032116ae 100644
--- a/src/knot/modules/rrl/rrl.c
+++ b/src/knot/modules/rrl/rrl.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "contrib/sockaddr.h"
diff --git a/src/knot/modules/static_modules.h.in b/src/knot/modules/static_modules.h.in
index ef40daca4..15c8966a8 100644
--- a/src/knot/modules/static_modules.h.in
+++ b/src/knot/modules/static_modules.h.in
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/modules/stats/stats.c b/src/knot/modules/stats/stats.c
index 94413a496..8d08b57fd 100644
--- a/src/knot/modules/stats/stats.c
+++ b/src/knot/modules/stats/stats.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "contrib/macros.h"
diff --git a/src/knot/modules/synthrecord/synthrecord.c b/src/knot/modules/synthrecord/synthrecord.c
index b54e783dc..6ed5ec775 100644
--- a/src/knot/modules/synthrecord/synthrecord.c
+++ b/src/knot/modules/synthrecord/synthrecord.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "contrib/ctype.h"
diff --git a/src/knot/modules/whoami/whoami.c b/src/knot/modules/whoami/whoami.c
index ea80fc963..427cfb93d 100644
--- a/src/knot/modules/whoami/whoami.c
+++ b/src/knot/modules/whoami/whoami.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <netinet/in.h>
diff --git a/src/knot/nameserver/axfr.c b/src/knot/nameserver/axfr.c
index 6a60b1968..e8983ae35 100644
--- a/src/knot/nameserver/axfr.c
+++ b/src/knot/nameserver/axfr.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <urcu.h>
diff --git a/src/knot/nameserver/axfr.h b/src/knot/nameserver/axfr.h
index 1d1e4eaf0..81fcad882 100644
--- a/src/knot/nameserver/axfr.h
+++ b/src/knot/nameserver/axfr.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/nameserver/chaos.c b/src/knot/nameserver/chaos.c
index 04b646a24..b7afdf491 100644
--- a/src/knot/nameserver/chaos.c
+++ b/src/knot/nameserver/chaos.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <strings.h>
diff --git a/src/knot/nameserver/chaos.h b/src/knot/nameserver/chaos.h
index 14923d1f2..e30ce2bea 100644
--- a/src/knot/nameserver/chaos.h
+++ b/src/knot/nameserver/chaos.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/knot/nameserver/internet.c b/src/knot/nameserver/internet.c
index 62830e74a..85f61a533 100644
--- a/src/knot/nameserver/internet.c
+++ b/src/knot/nameserver/internet.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "libknot/libknot.h"
diff --git a/src/knot/nameserver/internet.h b/src/knot/nameserver/internet.h
index d70ca0efe..d8deb4b9f 100644
--- a/src/knot/nameserver/internet.h
+++ b/src/knot/nameserver/internet.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/nameserver/ixfr.c b/src/knot/nameserver/ixfr.c
index fa1447e3f..c07dcdb81 100644
--- a/src/knot/nameserver/ixfr.c
+++ b/src/knot/nameserver/ixfr.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <urcu.h>
diff --git a/src/knot/nameserver/ixfr.h b/src/knot/nameserver/ixfr.h
index 6c8ba2e60..0f55123d2 100644
--- a/src/knot/nameserver/ixfr.h
+++ b/src/knot/nameserver/ixfr.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/nameserver/log.h b/src/knot/nameserver/log.h
index c46a9086f..794f165ae 100644
--- a/src/knot/nameserver/log.h
+++ b/src/knot/nameserver/log.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/nameserver/notify.c b/src/knot/nameserver/notify.c
index fe9273bde..f8dd2a3fe 100644
--- a/src/knot/nameserver/notify.c
+++ b/src/knot/nameserver/notify.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/nameserver/notify.h b/src/knot/nameserver/notify.h
index 4f282da4c..07d43b8a7 100644
--- a/src/knot/nameserver/notify.h
+++ b/src/knot/nameserver/notify.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/nameserver/nsec_proofs.c b/src/knot/nameserver/nsec_proofs.c
index cbbdf2dc2..3ded5db4e 100644
--- a/src/knot/nameserver/nsec_proofs.c
+++ b/src/knot/nameserver/nsec_proofs.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/nameserver/nsec_proofs.h b/src/knot/nameserver/nsec_proofs.h
index 1a5528fa7..09d5f2ac0 100644
--- a/src/knot/nameserver/nsec_proofs.h
+++ b/src/knot/nameserver/nsec_proofs.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/nameserver/process_query.c b/src/knot/nameserver/process_query.c
index b8ecd99ed..4d3641c66 100644
--- a/src/knot/nameserver/process_query.c
+++ b/src/knot/nameserver/process_query.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <urcu.h>
diff --git a/src/knot/nameserver/process_query.h b/src/knot/nameserver/process_query.h
index c91a7beb4..dc88f7b92 100644
--- a/src/knot/nameserver/process_query.h
+++ b/src/knot/nameserver/process_query.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/nameserver/query_module.c b/src/knot/nameserver/query_module.c
index 42644020f..4756ecb5b 100644
--- a/src/knot/nameserver/query_module.c
+++ b/src/knot/nameserver/query_module.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/nameserver/query_module.h b/src/knot/nameserver/query_module.h
index 3355c342c..95056fd34 100644
--- a/src/knot/nameserver/query_module.h
+++ b/src/knot/nameserver/query_module.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/nameserver/tsig_ctx.c b/src/knot/nameserver/tsig_ctx.c
index 8b4f9b746..56fb6119d 100644
--- a/src/knot/nameserver/tsig_ctx.c
+++ b/src/knot/nameserver/tsig_ctx.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/nameserver/tsig_ctx.h b/src/knot/nameserver/tsig_ctx.h
index 256ada36d..3e916710a 100644
--- a/src/knot/nameserver/tsig_ctx.h
+++ b/src/knot/nameserver/tsig_ctx.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/nameserver/update.c b/src/knot/nameserver/update.c
index 904f7f3d2..a309389db 100644
--- a/src/knot/nameserver/update.c
+++ b/src/knot/nameserver/update.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <sys/socket.h>
diff --git a/src/knot/nameserver/update.h b/src/knot/nameserver/update.h
index 8de10b62c..24cd86c32 100644
--- a/src/knot/nameserver/update.h
+++ b/src/knot/nameserver/update.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/nameserver/xfr.c b/src/knot/nameserver/xfr.c
index c9b3f9e8c..6dd0d3bd0 100644
--- a/src/knot/nameserver/xfr.c
+++ b/src/knot/nameserver/xfr.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "knot/nameserver/xfr.h"
diff --git a/src/knot/nameserver/xfr.h b/src/knot/nameserver/xfr.h
index 579e31785..c129f8d39 100644
--- a/src/knot/nameserver/xfr.h
+++ b/src/knot/nameserver/xfr.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/query/capture.c b/src/knot/query/capture.c
index 983692f82..4269f89f6 100644
--- a/src/knot/query/capture.c
+++ b/src/knot/query/capture.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/query/capture.h b/src/knot/query/capture.h
index 5c78479ac..02552f2ff 100644
--- a/src/knot/query/capture.h
+++ b/src/knot/query/capture.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/query/layer.h b/src/knot/query/layer.h
index d0fb12f7f..252d043ae 100644
--- a/src/knot/query/layer.h
+++ b/src/knot/query/layer.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/query/query.c b/src/knot/query/query.c
index edff76ae0..2e537b183 100644
--- a/src/knot/query/query.c
+++ b/src/knot/query/query.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "knot/query/query.h"
diff --git a/src/knot/query/query.h b/src/knot/query/query.h
index cd6029eb3..ea505abbf 100644
--- a/src/knot/query/query.h
+++ b/src/knot/query/query.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/query/requestor.c b/src/knot/query/requestor.c
index d28b9c94a..440695e91 100644
--- a/src/knot/query/requestor.c
+++ b/src/knot/query/requestor.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/query/requestor.h b/src/knot/query/requestor.h
index e0ee14ebd..13d0c00b9 100644
--- a/src/knot/query/requestor.h
+++ b/src/knot/query/requestor.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/server/dthreads.c b/src/knot/server/dthreads.c
index 30689f565..f3d94e40c 100644
--- a/src/knot/server/dthreads.c
+++ b/src/knot/server/dthreads.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <signal.h>
diff --git a/src/knot/server/dthreads.h b/src/knot/server/dthreads.h
index bb6c7b8b8..086fd43b2 100644
--- a/src/knot/server/dthreads.h
+++ b/src/knot/server/dthreads.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \brief Threading API.
diff --git a/src/knot/server/server.c b/src/knot/server/server.c
index 252ec0aed..1bd35a4ca 100644
--- a/src/knot/server/server.c
+++ b/src/knot/server/server.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #define __APPLE_USE_RFC_3542
diff --git a/src/knot/server/server.h b/src/knot/server/server.h
index 76fcc86f5..d62f94994 100644
--- a/src/knot/server/server.h
+++ b/src/knot/server/server.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/server/tcp-handler.c b/src/knot/server/tcp-handler.c
index 2a0a6ffd1..2915a72f0 100644
--- a/src/knot/server/tcp-handler.c
+++ b/src/knot/server/tcp-handler.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <unistd.h>
diff --git a/src/knot/server/tcp-handler.h b/src/knot/server/tcp-handler.h
index 9d048d723..f4e62cc90 100644
--- a/src/knot/server/tcp-handler.h
+++ b/src/knot/server/tcp-handler.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \brief TCP sockets threading model.
diff --git a/src/knot/server/udp-handler.c b/src/knot/server/udp-handler.c
index 50760944b..7f9e6c84f 100644
--- a/src/knot/server/udp-handler.c
+++ b/src/knot/server/udp-handler.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #define __APPLE_USE_RFC_3542
diff --git a/src/knot/server/udp-handler.h b/src/knot/server/udp-handler.h
index 5555b98c8..805c0a7fb 100644
--- a/src/knot/server/udp-handler.h
+++ b/src/knot/server/udp-handler.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \brief UDP sockets threading model.
diff --git a/src/knot/updates/acl.c b/src/knot/updates/acl.c
index 28f962685..c2a9556c6 100644
--- a/src/knot/updates/acl.c
+++ b/src/knot/updates/acl.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "knot/updates/acl.h"
diff --git a/src/knot/updates/acl.h b/src/knot/updates/acl.h
index e15df39f6..ef763a02a 100644
--- a/src/knot/updates/acl.h
+++ b/src/knot/updates/acl.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/knot/updates/apply.c b/src/knot/updates/apply.c
index 1b4cf5bf7..996d736e8 100644
--- a/src/knot/updates/apply.c
+++ b/src/knot/updates/apply.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/updates/apply.h b/src/knot/updates/apply.h
index 7908ca4c0..14538d21e 100644
--- a/src/knot/updates/apply.h
+++ b/src/knot/updates/apply.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/updates/changesets.c b/src/knot/updates/changesets.c
index 3c0c9dcc4..d886006ac 100644
--- a/src/knot/updates/changesets.c
+++ b/src/knot/updates/changesets.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/updates/changesets.h b/src/knot/updates/changesets.h
index 800271266..c6a6a33ba 100644
--- a/src/knot/updates/changesets.h
+++ b/src/knot/updates/changesets.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/updates/ddns.c b/src/knot/updates/ddns.c
index cd2952e9e..cac4c42d3 100644
--- a/src/knot/updates/ddns.c
+++ b/src/knot/updates/ddns.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/updates/ddns.h b/src/knot/updates/ddns.h
index 171245dd7..68f3867c8 100644
--- a/src/knot/updates/ddns.h
+++ b/src/knot/updates/ddns.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/knot/updates/zone-update.c b/src/knot/updates/zone-update.c
index e253ae678..91d34809c 100644
--- a/src/knot/updates/zone-update.c
+++ b/src/knot/updates/zone-update.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "knot/common/log.h"
diff --git a/src/knot/updates/zone-update.h b/src/knot/updates/zone-update.h
index b5d7a9a73..59eb3b9f1 100644
--- a/src/knot/updates/zone-update.h
+++ b/src/knot/updates/zone-update.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/worker/pool.c b/src/knot/worker/pool.c
index b5f55a277..0932c3b95 100644
--- a/src/knot/worker/pool.c
+++ b/src/knot/worker/pool.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/knot/worker/pool.h b/src/knot/worker/pool.h
index 424b5b11c..d710a359e 100644
--- a/src/knot/worker/pool.h
+++ b/src/knot/worker/pool.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/knot/worker/queue.c b/src/knot/worker/queue.c
index b3eba6039..14dd27f75 100644
--- a/src/knot/worker/queue.c
+++ b/src/knot/worker/queue.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "knot/worker/queue.h"
diff --git a/src/knot/worker/queue.h b/src/knot/worker/queue.h
index d60d9d662..3c654854e 100644
--- a/src/knot/worker/queue.h
+++ b/src/knot/worker/queue.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/knot/zone/contents.c b/src/knot/zone/contents.c
index 4f800d1bc..671b483bb 100644
--- a/src/knot/zone/contents.c
+++ b/src/knot/zone/contents.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/zone/contents.h b/src/knot/zone/contents.h
index 7af8089fd..6d6e3c971 100644
--- a/src/knot/zone/contents.h
+++ b/src/knot/zone/contents.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/knot/zone/node.c b/src/knot/zone/node.c
index 2d593b9bb..4d920717d 100644
--- a/src/knot/zone/node.c
+++ b/src/knot/zone/node.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "knot/zone/node.h"
diff --git a/src/knot/zone/node.h b/src/knot/zone/node.h
index 63015596f..b380e8fef 100644
--- a/src/knot/zone/node.h
+++ b/src/knot/zone/node.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/zone/semantic-check.c b/src/knot/zone/semantic-check.c
index e7e9129b8..b2fe63f42 100644
--- a/src/knot/zone/semantic-check.c
+++ b/src/knot/zone/semantic-check.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdio.h>
diff --git a/src/knot/zone/semantic-check.h b/src/knot/zone/semantic-check.h
index 2010ec979..afafcb248 100644
--- a/src/knot/zone/semantic-check.h
+++ b/src/knot/zone/semantic-check.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/zone/serial.c b/src/knot/zone/serial.c
index 9846f9241..618728dbb 100644
--- a/src/knot/zone/serial.c
+++ b/src/knot/zone/serial.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/knot/zone/serial.h b/src/knot/zone/serial.h
index 3453de80a..dbd9dfbda 100644
--- a/src/knot/zone/serial.h
+++ b/src/knot/zone/serial.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/knot/zone/timers.c b/src/knot/zone/timers.c
index 0ff8aed7e..c419494e6 100644
--- a/src/knot/zone/timers.c
+++ b/src/knot/zone/timers.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "knot/zone/timers.h"
diff --git a/src/knot/zone/timers.h b/src/knot/zone/timers.h
index 4c8d0fa54..f761c6712 100644
--- a/src/knot/zone/timers.h
+++ b/src/knot/zone/timers.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/zone/zone-diff.c b/src/knot/zone/zone-diff.c
index 6022d4ea7..c073492ed 100644
--- a/src/knot/zone/zone-diff.c
+++ b/src/knot/zone/zone-diff.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/zone/zone-diff.h b/src/knot/zone/zone-diff.h
index 5f467aabd..23bdb20af 100644
--- a/src/knot/zone/zone-diff.h
+++ b/src/knot/zone/zone-diff.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/zone/zone-dump.c b/src/knot/zone/zone-dump.c
index 9729cbc08..21d12597c 100644
--- a/src/knot/zone/zone-dump.c
+++ b/src/knot/zone/zone-dump.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <inttypes.h>
diff --git a/src/knot/zone/zone-dump.h b/src/knot/zone/zone-dump.h
index e9d8be83c..5f92042a9 100644
--- a/src/knot/zone/zone-dump.h
+++ b/src/knot/zone/zone-dump.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/knot/zone/zone-load.c b/src/knot/zone/zone-load.c
index 6b1c68ebb..ff241fae3 100644
--- a/src/knot/zone/zone-load.c
+++ b/src/knot/zone/zone-load.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "knot/common/log.h"
diff --git a/src/knot/zone/zone-load.h b/src/knot/zone/zone-load.h
index 3210476be..9fc5b4a42 100644
--- a/src/knot/zone/zone-load.h
+++ b/src/knot/zone/zone-load.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/knot/zone/zone-tree.c b/src/knot/zone/zone-tree.c
index d46b5ae96..443682f17 100644
--- a/src/knot/zone/zone-tree.c
+++ b/src/knot/zone/zone-tree.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/zone/zone-tree.h b/src/knot/zone/zone-tree.h
index d3cc909cd..baac735bf 100644
--- a/src/knot/zone/zone-tree.h
+++ b/src/knot/zone/zone-tree.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/zone/zone.c b/src/knot/zone/zone.c
index a16db7b48..eec771b5a 100644
--- a/src/knot/zone/zone.c
+++ b/src/knot/zone/zone.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdlib.h>
diff --git a/src/knot/zone/zone.h b/src/knot/zone/zone.h
index 2f71749c8..f64375c3a 100644
--- a/src/knot/zone/zone.h
+++ b/src/knot/zone/zone.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/knot/zone/zonedb-load.c b/src/knot/zone/zonedb-load.c
index a6e98341e..f68dfd692 100644
--- a/src/knot/zone/zonedb-load.c
+++ b/src/knot/zone/zonedb-load.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/knot/zone/zonedb-load.h b/src/knot/zone/zonedb-load.h
index fda12d82f..1877a6b66 100644
--- a/src/knot/zone/zonedb-load.h
+++ b/src/knot/zone/zonedb-load.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/knot/zone/zonedb.c b/src/knot/zone/zonedb.c
index d949a59e4..543146f89 100644
--- a/src/knot/zone/zonedb.c
+++ b/src/knot/zone/zonedb.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/zone/zonedb.h b/src/knot/zone/zonedb.h
index c5fab4d78..ab8aa4a07 100644
--- a/src/knot/zone/zonedb.h
+++ b/src/knot/zone/zonedb.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/knot/zone/zonefile.c b/src/knot/zone/zonefile.c
index 37fc90bfd..dcbfbaa9c 100644
--- a/src/knot/zone/zonefile.c
+++ b/src/knot/zone/zonefile.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/knot/zone/zonefile.h b/src/knot/zone/zonefile.h
index 90283ee35..bbab1a9f2 100644
--- a/src/knot/zone/zonefile.h
+++ b/src/knot/zone/zonefile.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/libdnssec/binary.c b/src/libdnssec/binary.c
index a57b421c6..4fec6f6ca 100644
--- a/src/libdnssec/binary.c
+++ b/src/libdnssec/binary.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/libdnssec/binary.h b/src/libdnssec/binary.h
index fb0cf9b07..e030c2686 100644
--- a/src/libdnssec/binary.h
+++ b/src/libdnssec/binary.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 /*!
  * \file
diff --git a/src/libdnssec/crypto.c b/src/libdnssec/crypto.c
index f54e20f86..2147b38db 100644
--- a/src/libdnssec/crypto.c
+++ b/src/libdnssec/crypto.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <gnutls/gnutls.h>
diff --git a/src/libdnssec/crypto.h b/src/libdnssec/crypto.h
index 46541b43f..097bb601e 100644
--- a/src/libdnssec/crypto.h
+++ b/src/libdnssec/crypto.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 /*!
  * \file
diff --git a/src/libdnssec/dnssec.h b/src/libdnssec/dnssec.h
index 838390184..d52f3504e 100644
--- a/src/libdnssec/dnssec.h
+++ b/src/libdnssec/dnssec.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 /**
  * \file
diff --git a/src/libdnssec/error.c b/src/libdnssec/error.c
index 97f7f8f39..fe9d599ae 100644
--- a/src/libdnssec/error.c
+++ b/src/libdnssec/error.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <string.h>
diff --git a/src/libdnssec/error.h b/src/libdnssec/error.h
index eaa6afd22..ccef2b76a 100644
--- a/src/libdnssec/error.h
+++ b/src/libdnssec/error.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 /*!
  * \file
diff --git a/src/libdnssec/key.h b/src/libdnssec/key.h
index 27de77857..cd1aa5cbd 100644
--- a/src/libdnssec/key.h
+++ b/src/libdnssec/key.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 /*!
  * \file
diff --git a/src/libdnssec/key/algorithm.c b/src/libdnssec/key/algorithm.c
index 84f538600..cf08e18b6 100644
--- a/src/libdnssec/key/algorithm.c
+++ b/src/libdnssec/key/algorithm.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <gnutls/gnutls.h>
diff --git a/src/libdnssec/key/algorithm.h b/src/libdnssec/key/algorithm.h
index 586682cc0..b80e2efc9 100644
--- a/src/libdnssec/key/algorithm.h
+++ b/src/libdnssec/key/algorithm.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/libdnssec/key/convert.c b/src/libdnssec/key/convert.c
index b8ebb7d59..27afdd8c5 100644
--- a/src/libdnssec/key/convert.c
+++ b/src/libdnssec/key/convert.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/libdnssec/key/convert.h b/src/libdnssec/key/convert.h
index bd2196e0f..fa1cd3408 100644
--- a/src/libdnssec/key/convert.h
+++ b/src/libdnssec/key/convert.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/libdnssec/key/dnskey.c b/src/libdnssec/key/dnskey.c
index dc89bcde5..5ccd31f29 100644
--- a/src/libdnssec/key/dnskey.c
+++ b/src/libdnssec/key/dnskey.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "libdnssec/binary.h"
diff --git a/src/libdnssec/key/dnskey.h b/src/libdnssec/key/dnskey.h
index de681c8cb..e72fc86e7 100644
--- a/src/libdnssec/key/dnskey.h
+++ b/src/libdnssec/key/dnskey.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/libdnssec/key/ds.c b/src/libdnssec/key/ds.c
index dcb4afe6b..a9a4d2b15 100644
--- a/src/libdnssec/key/ds.c
+++ b/src/libdnssec/key/ds.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "libdnssec/binary.h"
diff --git a/src/libdnssec/key/internal.h b/src/libdnssec/key/internal.h
index 10c9c8ee3..798942860 100644
--- a/src/libdnssec/key/internal.h
+++ b/src/libdnssec/key/internal.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/libdnssec/key/key.c b/src/libdnssec/key/key.c
index d144d6406..3cc41fee6 100644
--- a/src/libdnssec/key/key.c
+++ b/src/libdnssec/key/key.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/libdnssec/key/keytag.c b/src/libdnssec/key/keytag.c
index edff6846b..d67ca3544 100644
--- a/src/libdnssec/key/keytag.c
+++ b/src/libdnssec/key/keytag.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/libdnssec/key/privkey.c b/src/libdnssec/key/privkey.c
index ec1dcbd9d..f0686074f 100644
--- a/src/libdnssec/key/privkey.c
+++ b/src/libdnssec/key/privkey.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <gnutls/abstract.h>
diff --git a/src/libdnssec/key/privkey.h b/src/libdnssec/key/privkey.h
index c0c5bb2c7..1fff1f57e 100644
--- a/src/libdnssec/key/privkey.h
+++ b/src/libdnssec/key/privkey.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/libdnssec/key/simple.c b/src/libdnssec/key/simple.c
index a2d8ea49c..7a3517a3a 100644
--- a/src/libdnssec/key/simple.c
+++ b/src/libdnssec/key/simple.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <gnutls/abstract.h>
diff --git a/src/libdnssec/keyid.c b/src/libdnssec/keyid.c
index c99a6578c..fa1c172e0 100644
--- a/src/libdnssec/keyid.c
+++ b/src/libdnssec/keyid.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/libdnssec/keyid.h b/src/libdnssec/keyid.h
index 24e201e54..2edb0799f 100644
--- a/src/libdnssec/keyid.h
+++ b/src/libdnssec/keyid.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 /*!
  * \file
diff --git a/src/libdnssec/keystore.h b/src/libdnssec/keystore.h
index 238251824..6ca13bb1d 100644
--- a/src/libdnssec/keystore.h
+++ b/src/libdnssec/keystore.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 /*!
  * \file
diff --git a/src/libdnssec/keystore/internal.h b/src/libdnssec/keystore/internal.h
index a87dd0397..a0cee2466 100644
--- a/src/libdnssec/keystore/internal.h
+++ b/src/libdnssec/keystore/internal.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/libdnssec/keystore/keystore.c b/src/libdnssec/keystore/keystore.c
index 203441a31..87261f3d9 100644
--- a/src/libdnssec/keystore/keystore.c
+++ b/src/libdnssec/keystore/keystore.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/libdnssec/keystore/pkcs11.c b/src/libdnssec/keystore/pkcs11.c
index dbe1a3729..b9d80aac2 100644
--- a/src/libdnssec/keystore/pkcs11.c
+++ b/src/libdnssec/keystore/pkcs11.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <gnutls/gnutls.h>
diff --git a/src/libdnssec/keystore/pkcs8.c b/src/libdnssec/keystore/pkcs8.c
index f05eda0c1..2672436af 100644
--- a/src/libdnssec/keystore/pkcs8.c
+++ b/src/libdnssec/keystore/pkcs8.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/libdnssec/keystore/pkcs8_dir.c b/src/libdnssec/keystore/pkcs8_dir.c
index bc67ad576..a77c6a94d 100644
--- a/src/libdnssec/keystore/pkcs8_dir.c
+++ b/src/libdnssec/keystore/pkcs8_dir.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/libdnssec/keytag.h b/src/libdnssec/keytag.h
index 5a8424ef8..7286a8ade 100644
--- a/src/libdnssec/keytag.h
+++ b/src/libdnssec/keytag.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 /*!
  * \file
diff --git a/src/libdnssec/list.h b/src/libdnssec/list.h
index 838c0b5ac..3a5290ec7 100644
--- a/src/libdnssec/list.h
+++ b/src/libdnssec/list.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 /*!
  * \file
diff --git a/src/libdnssec/list/list.c b/src/libdnssec/list/list.c
index 5d9aded81..f1940cae1 100644
--- a/src/libdnssec/list/list.c
+++ b/src/libdnssec/list/list.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdlib.h>
diff --git a/src/libdnssec/nsec.h b/src/libdnssec/nsec.h
index ce6975211..76107786b 100644
--- a/src/libdnssec/nsec.h
+++ b/src/libdnssec/nsec.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 /*!
  * \file
diff --git a/src/libdnssec/nsec/bitmap.c b/src/libdnssec/nsec/bitmap.c
index 001613a3a..999f16159 100644
--- a/src/libdnssec/nsec/bitmap.c
+++ b/src/libdnssec/nsec/bitmap.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <limits.h>
diff --git a/src/libdnssec/nsec/hash.c b/src/libdnssec/nsec/hash.c
index 897320fa8..92032becb 100644
--- a/src/libdnssec/nsec/hash.c
+++ b/src/libdnssec/nsec/hash.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/libdnssec/nsec/nsec.c b/src/libdnssec/nsec/nsec.c
index bb6084a73..16d4d26a1 100644
--- a/src/libdnssec/nsec/nsec.c
+++ b/src/libdnssec/nsec/nsec.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "libdnssec/nsec.h"
diff --git a/src/libdnssec/p11/p11.c b/src/libdnssec/p11/p11.c
index 07f34f2f5..c3af54498 100644
--- a/src/libdnssec/p11/p11.c
+++ b/src/libdnssec/p11/p11.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/libdnssec/p11/p11.h b/src/libdnssec/p11/p11.h
index a0f996981..dfe978cd5 100644
--- a/src/libdnssec/p11/p11.h
+++ b/src/libdnssec/p11/p11.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/libdnssec/random.c b/src/libdnssec/random.c
index 30b0c2df6..6dd326383 100644
--- a/src/libdnssec/random.c
+++ b/src/libdnssec/random.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/libdnssec/random.h b/src/libdnssec/random.h
index 0886e5102..a62859eea 100644
--- a/src/libdnssec/random.h
+++ b/src/libdnssec/random.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 /*!
  * \file
diff --git a/src/libdnssec/shared/bignum.c b/src/libdnssec/shared/bignum.c
index 921a1e6ec..2e72e982e 100644
--- a/src/libdnssec/shared/bignum.c
+++ b/src/libdnssec/shared/bignum.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/libdnssec/shared/bignum.h b/src/libdnssec/shared/bignum.h
index 4186a63e9..e5853fbb8 100644
--- a/src/libdnssec/shared/bignum.h
+++ b/src/libdnssec/shared/bignum.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/libdnssec/shared/binary_wire.h b/src/libdnssec/shared/binary_wire.h
index 78ccff09b..44ea08f28 100644
--- a/src/libdnssec/shared/binary_wire.h
+++ b/src/libdnssec/shared/binary_wire.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/libdnssec/shared/dname.c b/src/libdnssec/shared/dname.c
index 51605f649..056432cb3 100644
--- a/src/libdnssec/shared/dname.c
+++ b/src/libdnssec/shared/dname.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/libdnssec/shared/dname.h b/src/libdnssec/shared/dname.h
index 82adeb708..3b2a3e740 100644
--- a/src/libdnssec/shared/dname.h
+++ b/src/libdnssec/shared/dname.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/libdnssec/shared/fs.c b/src/libdnssec/shared/fs.c
index 10c25d9a5..573496320 100644
--- a/src/libdnssec/shared/fs.c
+++ b/src/libdnssec/shared/fs.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/libdnssec/shared/fs.h b/src/libdnssec/shared/fs.h
index 542c87bdf..c0871ecd8 100644
--- a/src/libdnssec/shared/fs.h
+++ b/src/libdnssec/shared/fs.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/libdnssec/shared/hex.c b/src/libdnssec/shared/hex.c
index 03c149192..10a7eb28d 100644
--- a/src/libdnssec/shared/hex.c
+++ b/src/libdnssec/shared/hex.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/libdnssec/shared/hex.h b/src/libdnssec/shared/hex.h
index 5a47cf4e4..ac549db26 100644
--- a/src/libdnssec/shared/hex.h
+++ b/src/libdnssec/shared/hex.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/libdnssec/shared/keyid_gnutls.c b/src/libdnssec/shared/keyid_gnutls.c
index 4fde08e7e..e9fd60439 100644
--- a/src/libdnssec/shared/keyid_gnutls.c
+++ b/src/libdnssec/shared/keyid_gnutls.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/libdnssec/shared/keyid_gnutls.h b/src/libdnssec/shared/keyid_gnutls.h
index 27ee4cdcd..e9b8de7c2 100644
--- a/src/libdnssec/shared/keyid_gnutls.h
+++ b/src/libdnssec/shared/keyid_gnutls.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/libdnssec/shared/pem.c b/src/libdnssec/shared/pem.c
index 0e5ba0057..42d3a6933 100644
--- a/src/libdnssec/shared/pem.c
+++ b/src/libdnssec/shared/pem.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/libdnssec/shared/pem.h b/src/libdnssec/shared/pem.h
index c96065b0f..bb8242de1 100644
--- a/src/libdnssec/shared/pem.h
+++ b/src/libdnssec/shared/pem.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/libdnssec/shared/shared.h b/src/libdnssec/shared/shared.h
index 1f55033e6..a488a5d37 100644
--- a/src/libdnssec/shared/shared.h
+++ b/src/libdnssec/shared/shared.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/libdnssec/sign.h b/src/libdnssec/sign.h
index 431353327..241e9c939 100644
--- a/src/libdnssec/sign.h
+++ b/src/libdnssec/sign.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 /*!
  * \file
diff --git a/src/libdnssec/sign/der.c b/src/libdnssec/sign/der.c
index 4d79876bf..cb47fcc7b 100644
--- a/src/libdnssec/sign/der.c
+++ b/src/libdnssec/sign/der.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdbool.h>
diff --git a/src/libdnssec/sign/der.h b/src/libdnssec/sign/der.h
index db8e910de..6d4efae93 100644
--- a/src/libdnssec/sign/der.h
+++ b/src/libdnssec/sign/der.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/libdnssec/sign/sign.c b/src/libdnssec/sign/sign.c
index 16b4e6492..8bac0d99c 100644
--- a/src/libdnssec/sign/sign.c
+++ b/src/libdnssec/sign/sign.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/libdnssec/tsig.c b/src/libdnssec/tsig.c
index 3edc8a3ca..5c1a2fdf9 100644
--- a/src/libdnssec/tsig.c
+++ b/src/libdnssec/tsig.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/libdnssec/tsig.h b/src/libdnssec/tsig.h
index e86198282..4b961e009 100644
--- a/src/libdnssec/tsig.h
+++ b/src/libdnssec/tsig.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 /*!
  * \file
diff --git a/src/libdnssec/version.h.in b/src/libdnssec/version.h.in
index de8752f36..b0ec0f0d5 100644
--- a/src/libdnssec/version.h.in
+++ b/src/libdnssec/version.h.in
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/libknot/attribute.h b/src/libknot/attribute.h
index 629bcc613..961f21ebf 100644
--- a/src/libknot/attribute.h
+++ b/src/libknot/attribute.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/codes.c b/src/libknot/codes.c
index 55f20fb35..00356c60c 100644
--- a/src/libknot/codes.c
+++ b/src/libknot/codes.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "libknot/attribute.h"
diff --git a/src/libknot/codes.h b/src/libknot/codes.h
index c5cf32349..fbbece87d 100644
--- a/src/libknot/codes.h
+++ b/src/libknot/codes.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/consts.h b/src/libknot/consts.h
index e516b9fc2..81fcc6aad 100644
--- a/src/libknot/consts.h
+++ b/src/libknot/consts.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/control/control.c b/src/libknot/control/control.c
index af68cfe9a..f0b3e346c 100644
--- a/src/libknot/control/control.c
+++ b/src/libknot/control/control.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/libknot/control/control.h b/src/libknot/control/control.h
index e4f73a145..120a43103 100644
--- a/src/libknot/control/control.h
+++ b/src/libknot/control/control.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/cookies.c b/src/libknot/cookies.c
index dd024d5c9..c7a04eaab 100644
--- a/src/libknot/cookies.c
+++ b/src/libknot/cookies.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/libknot/cookies.h b/src/libknot/cookies.h
index 5bdfb68f7..3f7f9f952 100644
--- a/src/libknot/cookies.h
+++ b/src/libknot/cookies.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
 * \file
diff --git a/src/libknot/db/db.h b/src/libknot/db/db.h
index f3edc150f..525535313 100644
--- a/src/libknot/db/db.h
+++ b/src/libknot/db/db.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 /*!
  * \file
diff --git a/src/libknot/db/db_lmdb.c b/src/libknot/db/db_lmdb.c
index f0e7be5c9..8d3037abb 100644
--- a/src/libknot/db/db_lmdb.c
+++ b/src/libknot/db/db_lmdb.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/libknot/db/db_lmdb.h b/src/libknot/db/db_lmdb.h
index d0213cf1e..a90e29740 100644
--- a/src/libknot/db/db_lmdb.h
+++ b/src/libknot/db/db_lmdb.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 /*!
  * \file
diff --git a/src/libknot/db/db_trie.c b/src/libknot/db/db_trie.c
index d0fbb0ca2..ca3db32ec 100644
--- a/src/libknot/db/db_trie.c
+++ b/src/libknot/db/db_trie.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/libknot/db/db_trie.h b/src/libknot/db/db_trie.h
index d2afdf827..67c51392d 100644
--- a/src/libknot/db/db_trie.h
+++ b/src/libknot/db/db_trie.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 /*!
  * \file
diff --git a/src/libknot/descriptor.c b/src/libknot/descriptor.c
index fa3bbd6a1..36339d4fd 100644
--- a/src/libknot/descriptor.c
+++ b/src/libknot/descriptor.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdio.h>
diff --git a/src/libknot/descriptor.h b/src/libknot/descriptor.h
index b91a7a92a..ba59310a9 100644
--- a/src/libknot/descriptor.h
+++ b/src/libknot/descriptor.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/dname.c b/src/libknot/dname.c
index 1a2790ea6..10246fbf9 100644
--- a/src/libknot/dname.c
+++ b/src/libknot/dname.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/libknot/dname.h b/src/libknot/dname.h
index c701610a1..76145218c 100644
--- a/src/libknot/dname.h
+++ b/src/libknot/dname.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/endian.h b/src/libknot/endian.h
index 30bdd77c2..e282306a5 100644
--- a/src/libknot/endian.h
+++ b/src/libknot/endian.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/errcode.h b/src/libknot/errcode.h
index 2fd1cea1c..974f300eb 100644
--- a/src/libknot/errcode.h
+++ b/src/libknot/errcode.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 /*!
 * \file
diff --git a/src/libknot/error.c b/src/libknot/error.c
index 1524b7911..4d2fb42f3 100644
--- a/src/libknot/error.c
+++ b/src/libknot/error.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdio.h>
diff --git a/src/libknot/error.h b/src/libknot/error.h
index 26fdddc79..a589e7880 100644
--- a/src/libknot/error.h
+++ b/src/libknot/error.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 /*!
 * \file
diff --git a/src/libknot/libknot.h b/src/libknot/libknot.h
index 472fb8d3b..e5eba31d1 100644
--- a/src/libknot/libknot.h
+++ b/src/libknot/libknot.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/lookup.h b/src/libknot/lookup.h
index 709713e8b..4a40da909 100644
--- a/src/libknot/lookup.h
+++ b/src/libknot/lookup.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/mm_ctx.h b/src/libknot/mm_ctx.h
index 1d0de702a..ab29cf348 100644
--- a/src/libknot/mm_ctx.h
+++ b/src/libknot/mm_ctx.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/packet/compr.h b/src/libknot/packet/compr.h
index 22c4a8e79..ba09ef643 100644
--- a/src/libknot/packet/compr.h
+++ b/src/libknot/packet/compr.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/packet/pkt.c b/src/libknot/packet/pkt.c
index 602d70def..b336fa50a 100644
--- a/src/libknot/packet/pkt.c
+++ b/src/libknot/packet/pkt.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/libknot/packet/pkt.h b/src/libknot/packet/pkt.h
index 96c1e1da6..46dab19b4 100644
--- a/src/libknot/packet/pkt.h
+++ b/src/libknot/packet/pkt.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/packet/rrset-wire.c b/src/libknot/packet/rrset-wire.c
index dadadd573..d19f10525 100644
--- a/src/libknot/packet/rrset-wire.c
+++ b/src/libknot/packet/rrset-wire.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/libknot/packet/rrset-wire.h b/src/libknot/packet/rrset-wire.h
index e4370fd78..a581f6430 100644
--- a/src/libknot/packet/rrset-wire.h
+++ b/src/libknot/packet/rrset-wire.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/packet/wire.h b/src/libknot/packet/wire.h
index 26bc80e5c..ae58c6a76 100644
--- a/src/libknot/packet/wire.h
+++ b/src/libknot/packet/wire.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/rdata.h b/src/libknot/rdata.h
index e3a818b42..84a3d5644 100644
--- a/src/libknot/rdata.h
+++ b/src/libknot/rdata.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/rdataset.c b/src/libknot/rdataset.c
index 4767bf9ab..711ec47e9 100644
--- a/src/libknot/rdataset.c
+++ b/src/libknot/rdataset.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/libknot/rdataset.h b/src/libknot/rdataset.h
index fa1d4df6a..1680a2293 100644
--- a/src/libknot/rdataset.h
+++ b/src/libknot/rdataset.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/rrset-dump.c b/src/libknot/rrset-dump.c
index a1c410a52..e08787513 100644
--- a/src/libknot/rrset-dump.c
+++ b/src/libknot/rrset-dump.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <arpa/inet.h>
diff --git a/src/libknot/rrset-dump.h b/src/libknot/rrset-dump.h
index 3bd05de16..df20e6a75 100644
--- a/src/libknot/rrset-dump.h
+++ b/src/libknot/rrset-dump.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/rrset.c b/src/libknot/rrset.c
index 67d7aed85..36cd2ddbf 100644
--- a/src/libknot/rrset.c
+++ b/src/libknot/rrset.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/libknot/rrset.h b/src/libknot/rrset.h
index aac9a4c04..f0d05e538 100644
--- a/src/libknot/rrset.h
+++ b/src/libknot/rrset.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/rrtype/dnskey.h b/src/libknot/rrtype/dnskey.h
index ff6f4b9d6..91a421117 100644
--- a/src/libknot/rrtype/dnskey.h
+++ b/src/libknot/rrtype/dnskey.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/rrtype/ds.h b/src/libknot/rrtype/ds.h
index d4479299a..7c8e6ed2c 100644
--- a/src/libknot/rrtype/ds.h
+++ b/src/libknot/rrtype/ds.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/rrtype/naptr.c b/src/libknot/rrtype/naptr.c
index ec513ca0f..5e40eac2b 100644
--- a/src/libknot/rrtype/naptr.c
+++ b/src/libknot/rrtype/naptr.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/libknot/rrtype/naptr.h b/src/libknot/rrtype/naptr.h
index a067f6415..0ca5ba604 100644
--- a/src/libknot/rrtype/naptr.h
+++ b/src/libknot/rrtype/naptr.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/rrtype/nsec.h b/src/libknot/rrtype/nsec.h
index 896ab3a86..82c114a00 100644
--- a/src/libknot/rrtype/nsec.h
+++ b/src/libknot/rrtype/nsec.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/rrtype/nsec3.h b/src/libknot/rrtype/nsec3.h
index f69c774aa..6fc285950 100644
--- a/src/libknot/rrtype/nsec3.h
+++ b/src/libknot/rrtype/nsec3.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/rrtype/nsec3param.h b/src/libknot/rrtype/nsec3param.h
index 239271a66..b758f4df1 100644
--- a/src/libknot/rrtype/nsec3param.h
+++ b/src/libknot/rrtype/nsec3param.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/rrtype/opt.c b/src/libknot/rrtype/opt.c
index 3784858d5..bd4496998 100644
--- a/src/libknot/rrtype/opt.c
+++ b/src/libknot/rrtype/opt.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/libknot/rrtype/opt.h b/src/libknot/rrtype/opt.h
index 24d80f539..c2a1464d4 100644
--- a/src/libknot/rrtype/opt.h
+++ b/src/libknot/rrtype/opt.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/rrtype/rdname.h b/src/libknot/rrtype/rdname.h
index 4354a6b55..49e0bd17f 100644
--- a/src/libknot/rrtype/rdname.h
+++ b/src/libknot/rrtype/rdname.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/rrtype/rrsig.h b/src/libknot/rrtype/rrsig.h
index 3a4872fef..2ceb7e848 100644
--- a/src/libknot/rrtype/rrsig.h
+++ b/src/libknot/rrtype/rrsig.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/rrtype/soa.h b/src/libknot/rrtype/soa.h
index a7aebfca8..af90d2fb0 100644
--- a/src/libknot/rrtype/soa.h
+++ b/src/libknot/rrtype/soa.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/rrtype/tsig.c b/src/libknot/rrtype/tsig.c
index f4b9b71ab..2925ac507 100644
--- a/src/libknot/rrtype/tsig.c
+++ b/src/libknot/rrtype/tsig.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/libknot/rrtype/tsig.h b/src/libknot/rrtype/tsig.h
index 2dd3696c0..b041a4ff8 100644
--- a/src/libknot/rrtype/tsig.h
+++ b/src/libknot/rrtype/tsig.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/tsig-op.c b/src/libknot/tsig-op.c
index acbcafb44..b035a4a26 100644
--- a/src/libknot/tsig-op.c
+++ b/src/libknot/tsig-op.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/src/libknot/tsig-op.h b/src/libknot/tsig-op.h
index b3e091dd7..9585893a7 100644
--- a/src/libknot/tsig-op.h
+++ b/src/libknot/tsig-op.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/tsig.c b/src/libknot/tsig.c
index 465307b7f..311780556 100644
--- a/src/libknot/tsig.c
+++ b/src/libknot/tsig.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/libknot/tsig.h b/src/libknot/tsig.h
index f3e4bbaff..659b027bf 100644
--- a/src/libknot/tsig.h
+++ b/src/libknot/tsig.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 /*!
  * \file
diff --git a/src/libknot/version.h.in b/src/libknot/version.h.in
index bbe8742a3..996b62798 100644
--- a/src/libknot/version.h.in
+++ b/src/libknot/version.h.in
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/libknot/wire.h b/src/libknot/wire.h
index 5f69d9f6e..8775ee661 100644
--- a/src/libknot/wire.h
+++ b/src/libknot/wire.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libknot/yparser/yparser.c b/src/libknot/yparser/yparser.c
index 91d472dff..03a746132 100644
--- a/src/libknot/yparser/yparser.c
+++ b/src/libknot/yparser/yparser.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <fcntl.h>
diff --git a/src/libknot/yparser/yparser.h b/src/libknot/yparser/yparser.h
index b01870d44..0d3f2099d 100644
--- a/src/libknot/yparser/yparser.h
+++ b/src/libknot/yparser/yparser.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 /*!
  * \file
diff --git a/src/libknot/yparser/ypbody.c b/src/libknot/yparser/ypbody.c
index 467b613d8..f1b13c587 100644
--- a/src/libknot/yparser/ypbody.c
+++ b/src/libknot/yparser/ypbody.c
@@ -12,7 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <string.h>
diff --git a/src/libknot/yparser/ypbody.rl b/src/libknot/yparser/ypbody.rl
index fbcdbf31b..9e1f9830f 100644
--- a/src/libknot/yparser/ypbody.rl
+++ b/src/libknot/yparser/ypbody.rl
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <string.h>
diff --git a/src/libknot/yparser/ypformat.c b/src/libknot/yparser/ypformat.c
index 2648c7571..7b0963aec 100644
--- a/src/libknot/yparser/ypformat.c
+++ b/src/libknot/yparser/ypformat.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdio.h>
diff --git a/src/libknot/yparser/ypformat.h b/src/libknot/yparser/ypformat.h
index 605d5092e..5a2a6e8ad 100644
--- a/src/libknot/yparser/ypformat.h
+++ b/src/libknot/yparser/ypformat.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 /*!
  * \file
diff --git a/src/libknot/yparser/ypschema.c b/src/libknot/yparser/ypschema.c
index db438b004..dff788a8f 100644
--- a/src/libknot/yparser/ypschema.c
+++ b/src/libknot/yparser/ypschema.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/libknot/yparser/ypschema.h b/src/libknot/yparser/ypschema.h
index 972a781a3..97247195c 100644
--- a/src/libknot/yparser/ypschema.h
+++ b/src/libknot/yparser/ypschema.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 /*!
  * \file
diff --git a/src/libknot/yparser/yptrafo.c b/src/libknot/yparser/yptrafo.c
index 581aa3289..2204f1056 100644
--- a/src/libknot/yparser/yptrafo.c
+++ b/src/libknot/yparser/yptrafo.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <arpa/inet.h>
diff --git a/src/libknot/yparser/yptrafo.h b/src/libknot/yparser/yptrafo.h
index 59fd4c848..4550c8441 100644
--- a/src/libknot/yparser/yptrafo.h
+++ b/src/libknot/yparser/yptrafo.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 /*!
  * \file
diff --git a/src/libzscanner/error.c b/src/libzscanner/error.c
index da487fb55..aa0418ee0 100644
--- a/src/libzscanner/error.c
+++ b/src/libzscanner/error.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdlib.h>
diff --git a/src/libzscanner/error.h b/src/libzscanner/error.h
index c54712749..884511e1d 100644
--- a/src/libzscanner/error.h
+++ b/src/libzscanner/error.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libzscanner/functions.c b/src/libzscanner/functions.c
index d9a1477ca..4430820c7 100644
--- a/src/libzscanner/functions.c
+++ b/src/libzscanner/functions.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdint.h>
diff --git a/src/libzscanner/functions.h b/src/libzscanner/functions.h
index ba1bc168d..0dade37ed 100644
--- a/src/libzscanner/functions.h
+++ b/src/libzscanner/functions.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libzscanner/scanner.c.g2 b/src/libzscanner/scanner.c.g2
index ad1d77442..30b35cdbe 100644
--- a/src/libzscanner/scanner.c.g2
+++ b/src/libzscanner/scanner.c.g2
@@ -12,7 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <arpa/inet.h>
diff --git a/src/libzscanner/scanner.c.t0 b/src/libzscanner/scanner.c.t0
index 29205f657..115ddeec9 100644
--- a/src/libzscanner/scanner.c.t0
+++ b/src/libzscanner/scanner.c.t0
@@ -12,7 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <arpa/inet.h>
diff --git a/src/libzscanner/scanner.h b/src/libzscanner/scanner.h
index 283dce5cc..576f7f2de 100644
--- a/src/libzscanner/scanner.h
+++ b/src/libzscanner/scanner.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/libzscanner/scanner.rl b/src/libzscanner/scanner.rl
index 4050b562d..807b7297c 100644
--- a/src/libzscanner/scanner.rl
+++ b/src/libzscanner/scanner.rl
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <arpa/inet.h>
diff --git a/src/libzscanner/scanner_body.rl b/src/libzscanner/scanner_body.rl
index 022cc9b89..223f43960 100644
--- a/src/libzscanner/scanner_body.rl
+++ b/src/libzscanner/scanner_body.rl
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 %%{
 	machine zone_scanner;
diff --git a/src/libzscanner/version.h.in b/src/libzscanner/version.h.in
index bdbee9aa2..d7e404435 100644
--- a/src/libzscanner/version.h.in
+++ b/src/libzscanner/version.h.in
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/utils/common/cert.c b/src/utils/common/cert.c
index b9cf2c490..1b76b23df 100644
--- a/src/utils/common/cert.c
+++ b/src/utils/common/cert.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <gnutls/abstract.h>
diff --git a/src/utils/common/cert.h b/src/utils/common/cert.h
index ad4901b92..51e3d53ac 100644
--- a/src/utils/common/cert.h
+++ b/src/utils/common/cert.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/utils/common/exec.c b/src/utils/common/exec.c
index 9b97fba68..a1603dc49 100644
--- a/src/utils/common/exec.c
+++ b/src/utils/common/exec.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <arpa/inet.h>
diff --git a/src/utils/common/exec.h b/src/utils/common/exec.h
index 0c5ad5dfb..57758abd3 100644
--- a/src/utils/common/exec.h
+++ b/src/utils/common/exec.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/utils/common/hex.c b/src/utils/common/hex.c
index 2ffa9f20c..3d4360d93 100644
--- a/src/utils/common/hex.c
+++ b/src/utils/common/hex.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/utils/common/hex.h b/src/utils/common/hex.h
index 8f9f44593..c0d211312 100644
--- a/src/utils/common/hex.h
+++ b/src/utils/common/hex.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 /*!
diff --git a/src/utils/common/lookup.c b/src/utils/common/lookup.c
index 168d64985..c61dc5b71 100644
--- a/src/utils/common/lookup.c
+++ b/src/utils/common/lookup.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <string.h>
diff --git a/src/utils/common/lookup.h b/src/utils/common/lookup.h
index a8eb065fa..cea8a486d 100644
--- a/src/utils/common/lookup.h
+++ b/src/utils/common/lookup.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/utils/common/msg.c b/src/utils/common/msg.c
index c3375d30d..e4304398c 100644
--- a/src/utils/common/msg.c
+++ b/src/utils/common/msg.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdarg.h>
diff --git a/src/utils/common/msg.h b/src/utils/common/msg.h
index a300afe4d..23b4164f0 100644
--- a/src/utils/common/msg.h
+++ b/src/utils/common/msg.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file msg.h
diff --git a/src/utils/common/netio.c b/src/utils/common/netio.c
index 892371713..e07caf945 100644
--- a/src/utils/common/netio.c
+++ b/src/utils/common/netio.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <arpa/inet.h>
diff --git a/src/utils/common/netio.h b/src/utils/common/netio.h
index d86114957..b54507ebe 100644
--- a/src/utils/common/netio.h
+++ b/src/utils/common/netio.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/utils/common/params.c b/src/utils/common/params.c
index e37431407..ae4604702 100644
--- a/src/utils/common/params.c
+++ b/src/utils/common/params.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <arpa/inet.h>
diff --git a/src/utils/common/params.h b/src/utils/common/params.h
index e9cc8717e..c68ce6076 100644
--- a/src/utils/common/params.h
+++ b/src/utils/common/params.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file
diff --git a/src/utils/common/resolv.c b/src/utils/common/resolv.c
index b5f84c55d..010506c7b 100644
--- a/src/utils/common/resolv.c
+++ b/src/utils/common/resolv.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdio.h>
diff --git a/src/utils/common/resolv.h b/src/utils/common/resolv.h
index bcf1a0fc4..98b5db58c 100644
--- a/src/utils/common/resolv.h
+++ b/src/utils/common/resolv.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file resolv.h
diff --git a/src/utils/common/sign.c b/src/utils/common/sign.c
index f8e9f29cc..52267ad1f 100644
--- a/src/utils/common/sign.c
+++ b/src/utils/common/sign.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <string.h>
diff --git a/src/utils/common/sign.h b/src/utils/common/sign.h
index d1912a0ca..fdfcbd8e4 100644
--- a/src/utils/common/sign.h
+++ b/src/utils/common/sign.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/utils/common/tls.c b/src/utils/common/tls.c
index 36a28643d..a3057b6e5 100644
--- a/src/utils/common/tls.c
+++ b/src/utils/common/tls.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <arpa/inet.h>
diff --git a/src/utils/common/tls.h b/src/utils/common/tls.h
index 50c3a90fc..97bec43f0 100644
--- a/src/utils/common/tls.h
+++ b/src/utils/common/tls.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/utils/common/token.c b/src/utils/common/token.c
index 0bba3c725..c9a0f0c2a 100644
--- a/src/utils/common/token.c
+++ b/src/utils/common/token.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdio.h>
diff --git a/src/utils/common/token.h b/src/utils/common/token.h
index b4d33d2f8..90d3eab81 100644
--- a/src/utils/common/token.h
+++ b/src/utils/common/token.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 /*!
  * \file token.h
diff --git a/src/utils/kdig/kdig_exec.c b/src/utils/kdig/kdig_exec.c
index 03908e229..147afd6bd 100644
--- a/src/utils/kdig/kdig_exec.c
+++ b/src/utils/kdig/kdig_exec.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdlib.h>
diff --git a/src/utils/kdig/kdig_exec.h b/src/utils/kdig/kdig_exec.h
index ee6c5480d..99167ce9c 100644
--- a/src/utils/kdig/kdig_exec.h
+++ b/src/utils/kdig/kdig_exec.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/utils/kdig/kdig_main.c b/src/utils/kdig/kdig_main.c
index 0cfcd47c5..4381efb65 100644
--- a/src/utils/kdig/kdig_main.c
+++ b/src/utils/kdig/kdig_main.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdlib.h>
diff --git a/src/utils/kdig/kdig_params.c b/src/utils/kdig/kdig_params.c
index 09eaacf78..afe908e0f 100644
--- a/src/utils/kdig/kdig_params.c
+++ b/src/utils/kdig/kdig_params.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <arpa/inet.h>
diff --git a/src/utils/kdig/kdig_params.h b/src/utils/kdig/kdig_params.h
index 17907ab55..dcb593526 100644
--- a/src/utils/kdig/kdig_params.h
+++ b/src/utils/kdig/kdig_params.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/utils/keymgr/bind_privkey.c b/src/utils/keymgr/bind_privkey.c
index 7e140e495..7e4fb5cf9 100644
--- a/src/utils/keymgr/bind_privkey.c
+++ b/src/utils/keymgr/bind_privkey.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <string.h>
diff --git a/src/utils/keymgr/bind_privkey.h b/src/utils/keymgr/bind_privkey.h
index 6c58e1da5..66ad6e717 100644
--- a/src/utils/keymgr/bind_privkey.h
+++ b/src/utils/keymgr/bind_privkey.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/utils/keymgr/functions.c b/src/utils/keymgr/functions.c
index 6991a84db..017f54f8a 100644
--- a/src/utils/keymgr/functions.c
+++ b/src/utils/keymgr/functions.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <limits.h>
diff --git a/src/utils/keymgr/functions.h b/src/utils/keymgr/functions.h
index 653957b3f..dda367f93 100644
--- a/src/utils/keymgr/functions.h
+++ b/src/utils/keymgr/functions.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/utils/keymgr/main.c b/src/utils/keymgr/main.c
index d132341e7..a854a8e80 100644
--- a/src/utils/keymgr/main.c
+++ b/src/utils/keymgr/main.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <getopt.h>
diff --git a/src/utils/khost/khost_main.c b/src/utils/khost/khost_main.c
index fc3fe1742..00f1cb884 100644
--- a/src/utils/khost/khost_main.c
+++ b/src/utils/khost/khost_main.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdlib.h>
diff --git a/src/utils/khost/khost_params.c b/src/utils/khost/khost_params.c
index bd5f09577..557ca398e 100644
--- a/src/utils/khost/khost_params.c
+++ b/src/utils/khost/khost_params.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <getopt.h>
diff --git a/src/utils/khost/khost_params.h b/src/utils/khost/khost_params.h
index 7fbd1f5fa..6f019fe91 100644
--- a/src/utils/khost/khost_params.h
+++ b/src/utils/khost/khost_params.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/utils/kjournalprint/main.c b/src/utils/kjournalprint/main.c
index 920782dd9..af8881315 100644
--- a/src/utils/kjournalprint/main.c
+++ b/src/utils/kjournalprint/main.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdlib.h>
diff --git a/src/utils/knotc/commands.c b/src/utils/knotc/commands.c
index 9b379f21b..3129c0287 100644
--- a/src/utils/knotc/commands.c
+++ b/src/utils/knotc/commands.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdio.h>
diff --git a/src/utils/knotc/commands.h b/src/utils/knotc/commands.h
index 5cabaf1c9..8e2fd5cdd 100644
--- a/src/utils/knotc/commands.h
+++ b/src/utils/knotc/commands.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/utils/knotc/estimator.c b/src/utils/knotc/estimator.c
index f1fa1a7f3..668e42609 100644
--- a/src/utils/knotc/estimator.c
+++ b/src/utils/knotc/estimator.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/utils/knotc/estimator.h b/src/utils/knotc/estimator.h
index ee05d5ff7..65ff950af 100644
--- a/src/utils/knotc/estimator.h
+++ b/src/utils/knotc/estimator.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/utils/knotc/interactive.c b/src/utils/knotc/interactive.c
index ad1410417..bdda64cb8 100644
--- a/src/utils/knotc/interactive.c
+++ b/src/utils/knotc/interactive.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdio.h>
diff --git a/src/utils/knotc/interactive.h b/src/utils/knotc/interactive.h
index 6c7b3be2e..67c713425 100644
--- a/src/utils/knotc/interactive.h
+++ b/src/utils/knotc/interactive.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/utils/knotc/main.c b/src/utils/knotc/main.c
index 6f69ea26a..7e5ce47ce 100644
--- a/src/utils/knotc/main.c
+++ b/src/utils/knotc/main.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <getopt.h>
diff --git a/src/utils/knotc/process.c b/src/utils/knotc/process.c
index 7f0502f6d..d46ae7b29 100644
--- a/src/utils/knotc/process.c
+++ b/src/utils/knotc/process.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <sys/stat.h>
diff --git a/src/utils/knotc/process.h b/src/utils/knotc/process.h
index 20b53573e..29f61dd61 100644
--- a/src/utils/knotc/process.h
+++ b/src/utils/knotc/process.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/utils/knotd/main.c b/src/utils/knotd/main.c
index b2bcc8356..c144f34b9 100644
--- a/src/utils/knotd/main.c
+++ b/src/utils/knotd/main.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <dirent.h>
diff --git a/src/utils/knsec3hash/knsec3hash.c b/src/utils/knsec3hash/knsec3hash.c
index b90167655..ded498f8e 100644
--- a/src/utils/knsec3hash/knsec3hash.c
+++ b/src/utils/knsec3hash/knsec3hash.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/utils/knsupdate/knsupdate_exec.c b/src/utils/knsupdate/knsupdate_exec.c
index a92de8858..bb23d2f52 100644
--- a/src/utils/knsupdate/knsupdate_exec.c
+++ b/src/utils/knsupdate/knsupdate_exec.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/utils/knsupdate/knsupdate_exec.h b/src/utils/knsupdate/knsupdate_exec.h
index 182c1419e..e4af8baa2 100644
--- a/src/utils/knsupdate/knsupdate_exec.h
+++ b/src/utils/knsupdate/knsupdate_exec.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/utils/knsupdate/knsupdate_main.c b/src/utils/knsupdate/knsupdate_main.c
index 69d471f4d..a27ea8e12 100644
--- a/src/utils/knsupdate/knsupdate_main.c
+++ b/src/utils/knsupdate/knsupdate_main.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdlib.h>
diff --git a/src/utils/knsupdate/knsupdate_params.c b/src/utils/knsupdate/knsupdate_params.c
index f2eee9199..9eab70759 100644
--- a/src/utils/knsupdate/knsupdate_params.c
+++ b/src/utils/knsupdate/knsupdate_params.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/utils/knsupdate/knsupdate_params.h b/src/utils/knsupdate/knsupdate_params.h
index 2c0c391e5..5b0bda67c 100644
--- a/src/utils/knsupdate/knsupdate_params.h
+++ b/src/utils/knsupdate/knsupdate_params.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/src/utils/kzonecheck/main.c b/src/utils/kzonecheck/main.c
index 2e8ce71c6..d76f4cae8 100644
--- a/src/utils/kzonecheck/main.c
+++ b/src/utils/kzonecheck/main.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <getopt.h>
diff --git a/src/utils/kzonecheck/zone_check.c b/src/utils/kzonecheck/zone_check.c
index 5ddc7d04d..0318bfd42 100644
--- a/src/utils/kzonecheck/zone_check.c
+++ b/src/utils/kzonecheck/zone_check.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdio.h>
diff --git a/src/utils/kzonecheck/zone_check.h b/src/utils/kzonecheck/zone_check.h
index 67b0f5eb4..cb34dc1a8 100644
--- a/src/utils/kzonecheck/zone_check.h
+++ b/src/utils/kzonecheck/zone_check.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/tests-fuzz/fuzz_dname_from_str.c b/tests-fuzz/fuzz_dname_from_str.c
index a34588799..61a3dc914 100644
--- a/tests-fuzz/fuzz_dname_from_str.c
+++ b/tests-fuzz/fuzz_dname_from_str.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdlib.h>
diff --git a/tests-fuzz/fuzz_dname_to_str.c b/tests-fuzz/fuzz_dname_to_str.c
index 1cf7fc0b7..fcc217f10 100644
--- a/tests-fuzz/fuzz_dname_to_str.c
+++ b/tests-fuzz/fuzz_dname_to_str.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "libknot/dname.h"
diff --git a/tests-fuzz/fuzz_packet.c b/tests-fuzz/fuzz_packet.c
index 61362c2f1..ee4e8af13 100644
--- a/tests-fuzz/fuzz_packet.c
+++ b/tests-fuzz/fuzz_packet.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdint.h>
diff --git a/tests-fuzz/fuzz_zscanner.c b/tests-fuzz/fuzz_zscanner.c
index cb8954581..4a4568f60 100644
--- a/tests-fuzz/fuzz_zscanner.c
+++ b/tests-fuzz/fuzz_zscanner.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdint.h>
diff --git a/tests-fuzz/knotd_wrap/afl-loop.h b/tests-fuzz/knotd_wrap/afl-loop.h
index 0515b3a43..87ae9c30c 100644
--- a/tests-fuzz/knotd_wrap/afl-loop.h
+++ b/tests-fuzz/knotd_wrap/afl-loop.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/tests-fuzz/knotd_wrap/server.c b/tests-fuzz/knotd_wrap/server.c
index 2a75cd191..9a34ef734 100644
--- a/tests-fuzz/knotd_wrap/server.c
+++ b/tests-fuzz/knotd_wrap/server.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #define server_reconfigure orig_server_reconfigure
diff --git a/tests-fuzz/knotd_wrap/tcp-handler.c b/tests-fuzz/knotd_wrap/tcp-handler.c
index fca9cf5bf..59b13fb3e 100644
--- a/tests-fuzz/knotd_wrap/tcp-handler.c
+++ b/tests-fuzz/knotd_wrap/tcp-handler.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #define tcp_master orig_tcp_master
diff --git a/tests-fuzz/knotd_wrap/udp-handler.c b/tests-fuzz/knotd_wrap/udp-handler.c
index 8f6401ce4..f7de5a2e8 100644
--- a/tests-fuzz/knotd_wrap/udp-handler.c
+++ b/tests-fuzz/knotd_wrap/udp-handler.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "knot/server/udp-handler.c"
diff --git a/tests/contrib/test_base32hex.c b/tests/contrib/test_base32hex.c
index 4c52fad8b..e49aa3061 100644
--- a/tests/contrib/test_base32hex.c
+++ b/tests/contrib/test_base32hex.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdlib.h>
diff --git a/tests/contrib/test_base64.c b/tests/contrib/test_base64.c
index 45e4e5562..57199b5cc 100644
--- a/tests/contrib/test_base64.c
+++ b/tests/contrib/test_base64.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdlib.h>
diff --git a/tests/contrib/test_dynarray.c b/tests/contrib/test_dynarray.c
index 3e4c57fa6..1e42802cc 100644
--- a/tests/contrib/test_dynarray.c
+++ b/tests/contrib/test_dynarray.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <string.h>
diff --git a/tests/contrib/test_heap.c b/tests/contrib/test_heap.c
index e49204c8f..7dc597538 100644
--- a/tests/contrib/test_heap.c
+++ b/tests/contrib/test_heap.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <tap/basic.h>
diff --git a/tests/contrib/test_net.c b/tests/contrib/test_net.c
index 95833625e..a52c884f8 100644
--- a/tests/contrib/test_net.c
+++ b/tests/contrib/test_net.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <tap/basic.h>
diff --git a/tests/contrib/test_net_shortwrite.c b/tests/contrib/test_net_shortwrite.c
index 37b80acda..772535fa4 100644
--- a/tests/contrib/test_net_shortwrite.c
+++ b/tests/contrib/test_net_shortwrite.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <tap/basic.h>
diff --git a/tests/contrib/test_qp-cow.c b/tests/contrib/test_qp-cow.c
index f2c5bc9a7..a6c804ddb 100644
--- a/tests/contrib/test_qp-cow.c
+++ b/tests/contrib/test_qp-cow.c
@@ -12,7 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/tests/contrib/test_qp-trie.c b/tests/contrib/test_qp-trie.c
index 5176c355e..b906f68bb 100644
--- a/tests/contrib/test_qp-trie.c
+++ b/tests/contrib/test_qp-trie.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdlib.h>
diff --git a/tests/contrib/test_siphash.c b/tests/contrib/test_siphash.c
index b7e2739f7..1ca019b63 100644
--- a/tests/contrib/test_siphash.c
+++ b/tests/contrib/test_siphash.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <string.h>
diff --git a/tests/contrib/test_sockaddr.c b/tests/contrib/test_sockaddr.c
index 5f8050718..3801f3588 100644
--- a/tests/contrib/test_sockaddr.c
+++ b/tests/contrib/test_sockaddr.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <tap/basic.h>
diff --git a/tests/contrib/test_string.c b/tests/contrib/test_string.c
index fca8b8a9e..1623aa8cb 100644
--- a/tests/contrib/test_string.c
+++ b/tests/contrib/test_string.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <tap/basic.h>
diff --git a/tests/contrib/test_strtonum.c b/tests/contrib/test_strtonum.c
index 48f2559a5..20ab49bce 100644
--- a/tests/contrib/test_strtonum.c
+++ b/tests/contrib/test_strtonum.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/tests/contrib/test_time.c b/tests/contrib/test_time.c
index 203d22eb9..54e037928 100644
--- a/tests/contrib/test_time.c
+++ b/tests/contrib/test_time.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <tap/basic.h>
diff --git a/tests/contrib/test_wire_ctx.c b/tests/contrib/test_wire_ctx.c
index 93456c35a..97741d65f 100644
--- a/tests/contrib/test_wire_ctx.c
+++ b/tests/contrib/test_wire_ctx.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <tap/basic.h>
diff --git a/tests/knot/test_acl.c b/tests/knot/test_acl.c
index be35607ee..4bf1b441d 100644
--- a/tests/knot/test_acl.c
+++ b/tests/knot/test_acl.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <sys/types.h>
diff --git a/tests/knot/test_changeset.c b/tests/knot/test_changeset.c
index 16179ec7e..ff8e49a5f 100644
--- a/tests/knot/test_changeset.c
+++ b/tests/knot/test_changeset.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <config.h>
diff --git a/tests/knot/test_conf.c b/tests/knot/test_conf.c
index 59ae4dda5..afdfa924d 100644
--- a/tests/knot/test_conf.c
+++ b/tests/knot/test_conf.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <tap/basic.h>
diff --git a/tests/knot/test_conf.h b/tests/knot/test_conf.h
index 708692a3b..8c0f51e62 100644
--- a/tests/knot/test_conf.h
+++ b/tests/knot/test_conf.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/tests/knot/test_conf_tools.c b/tests/knot/test_conf_tools.c
index 178b2699f..2e003656d 100644
--- a/tests/knot/test_conf_tools.c
+++ b/tests/knot/test_conf_tools.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdlib.h>
diff --git a/tests/knot/test_confdb.c b/tests/knot/test_confdb.c
index a6508726c..2c63b8833 100644
--- a/tests/knot/test_confdb.c
+++ b/tests/knot/test_confdb.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <tap/basic.h>
diff --git a/tests/knot/test_confio.c b/tests/knot/test_confio.c
index 604f4285d..ef67bbdf9 100644
--- a/tests/knot/test_confio.c
+++ b/tests/knot/test_confio.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <tap/basic.h>
diff --git a/tests/knot/test_dthreads.c b/tests/knot/test_dthreads.c
index 0637e7cf3..c2c9da2c0 100644
--- a/tests/knot/test_dthreads.c
+++ b/tests/knot/test_dthreads.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <pthread.h>
diff --git a/tests/knot/test_fdset.c b/tests/knot/test_fdset.c
index 181838ce0..10d1b4259 100644
--- a/tests/knot/test_fdset.c
+++ b/tests/knot/test_fdset.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdlib.h>
diff --git a/tests/knot/test_journal.c b/tests/knot/test_journal.c
index 457cde09e..91fbac7e0 100644
--- a/tests/knot/test_journal.c
+++ b/tests/knot/test_journal.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/tests/knot/test_kasp_db.c b/tests/knot/test_kasp_db.c
index d775d0a7c..e7765968c 100644
--- a/tests/knot/test_kasp_db.c
+++ b/tests/knot/test_kasp_db.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/tests/knot/test_node.c b/tests/knot/test_node.c
index ef2a01d18..3abacaa7b 100644
--- a/tests/knot/test_node.c
+++ b/tests/knot/test_node.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/tests/knot/test_process_query.c b/tests/knot/test_process_query.c
index aa678773a..4ccb0ea2d 100644
--- a/tests/knot/test_process_query.c
+++ b/tests/knot/test_process_query.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/tests/knot/test_query_module.c b/tests/knot/test_query_module.c
index cb4a606b3..bb8dc0376 100644
--- a/tests/knot/test_query_module.c
+++ b/tests/knot/test_query_module.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <tap/basic.h>
diff --git a/tests/knot/test_requestor.c b/tests/knot/test_requestor.c
index ea87fb74f..ea3a186eb 100644
--- a/tests/knot/test_requestor.c
+++ b/tests/knot/test_requestor.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/tests/knot/test_server.c b/tests/knot/test_server.c
index c1cc2ad8b..d8737f3da 100644
--- a/tests/knot/test_server.c
+++ b/tests/knot/test_server.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <tap/basic.h>
diff --git a/tests/knot/test_server.h b/tests/knot/test_server.h
index 4a6e4274c..64d69b023 100644
--- a/tests/knot/test_server.h
+++ b/tests/knot/test_server.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/tests/knot/test_worker_pool.c b/tests/knot/test_worker_pool.c
index e644aa63a..561e3bb03 100644
--- a/tests/knot/test_worker_pool.c
+++ b/tests/knot/test_worker_pool.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <tap/basic.h>
diff --git a/tests/knot/test_worker_queue.c b/tests/knot/test_worker_queue.c
index d35f0aaa6..4136c9bc7 100644
--- a/tests/knot/test_worker_queue.c
+++ b/tests/knot/test_worker_queue.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <tap/basic.h>
diff --git a/tests/knot/test_zone-tree.c b/tests/knot/test_zone-tree.c
index a1fab6873..69fdde8b9 100644
--- a/tests/knot/test_zone-tree.c
+++ b/tests/knot/test_zone-tree.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdlib.h>
diff --git a/tests/knot/test_zone-update.c b/tests/knot/test_zone-update.c
index 5e528dda1..c3ba2e0ec 100644
--- a/tests/knot/test_zone-update.c
+++ b/tests/knot/test_zone-update.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/tests/knot/test_zone_events.c b/tests/knot/test_zone_events.c
index 801c2d98e..2be88274e 100644
--- a/tests/knot/test_zone_events.c
+++ b/tests/knot/test_zone_events.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <tap/basic.h>
diff --git a/tests/knot/test_zone_serial.c b/tests/knot/test_zone_serial.c
index 73b7f4c74..ea43c533a 100644
--- a/tests/knot/test_zone_serial.c
+++ b/tests/knot/test_zone_serial.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <tap/basic.h>
diff --git a/tests/knot/test_zone_timers.c b/tests/knot/test_zone_timers.c
index d60aa8e5d..86f3be6e8 100644
--- a/tests/knot/test_zone_timers.c
+++ b/tests/knot/test_zone_timers.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/tests/knot/test_zonedb.c b/tests/knot/test_zonedb.c
index 3ec2b9350..73d30cb16 100644
--- a/tests/knot/test_zonedb.c
+++ b/tests/knot/test_zonedb.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <tap/basic.h>
diff --git a/tests/libdnssec/sample_keys.h b/tests/libdnssec/sample_keys.h
index c788ed510..0a7558316 100644
--- a/tests/libdnssec/sample_keys.h
+++ b/tests/libdnssec/sample_keys.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/tests/libdnssec/test_binary.c b/tests/libdnssec/test_binary.c
index cab318515..abba6eb99 100644
--- a/tests/libdnssec/test_binary.c
+++ b/tests/libdnssec/test_binary.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdint.h>
diff --git a/tests/libdnssec/test_crypto.c b/tests/libdnssec/test_crypto.c
index 617637b60..04d8e3e92 100644
--- a/tests/libdnssec/test_crypto.c
+++ b/tests/libdnssec/test_crypto.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <tap/basic.h>
diff --git a/tests/libdnssec/test_key.c b/tests/libdnssec/test_key.c
index a291de4d9..d40b04e7d 100644
--- a/tests/libdnssec/test_key.c
+++ b/tests/libdnssec/test_key.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <tap/basic.h>
diff --git a/tests/libdnssec/test_key_algorithm.c b/tests/libdnssec/test_key_algorithm.c
index edffbaa2f..185d41b34 100644
--- a/tests/libdnssec/test_key_algorithm.c
+++ b/tests/libdnssec/test_key_algorithm.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <tap/basic.h>
diff --git a/tests/libdnssec/test_key_ds.c b/tests/libdnssec/test_key_ds.c
index 25d7c9d0a..17131af60 100644
--- a/tests/libdnssec/test_key_ds.c
+++ b/tests/libdnssec/test_key_ds.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <tap/basic.h>
diff --git a/tests/libdnssec/test_keyid.c b/tests/libdnssec/test_keyid.c
index 15bfe983f..a0b723208 100644
--- a/tests/libdnssec/test_keyid.c
+++ b/tests/libdnssec/test_keyid.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <tap/basic.h>
diff --git a/tests/libdnssec/test_keystore_pkcs11.c b/tests/libdnssec/test_keystore_pkcs11.c
index c83eb8286..1556b1cad 100644
--- a/tests/libdnssec/test_keystore_pkcs11.c
+++ b/tests/libdnssec/test_keystore_pkcs11.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <tap/basic.h>
diff --git a/tests/libdnssec/test_keystore_pkcs8.c b/tests/libdnssec/test_keystore_pkcs8.c
index b7c74e705..bf8e87d58 100644
--- a/tests/libdnssec/test_keystore_pkcs8.c
+++ b/tests/libdnssec/test_keystore_pkcs8.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <string.h>
diff --git a/tests/libdnssec/test_keystore_pkcs8_dir.c b/tests/libdnssec/test_keystore_pkcs8_dir.c
index 124b8c361..8748300b1 100644
--- a/tests/libdnssec/test_keystore_pkcs8_dir.c
+++ b/tests/libdnssec/test_keystore_pkcs8_dir.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdio.h>
diff --git a/tests/libdnssec/test_keytag.c b/tests/libdnssec/test_keytag.c
index f71426edd..a8155fe98 100644
--- a/tests/libdnssec/test_keytag.c
+++ b/tests/libdnssec/test_keytag.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <tap/basic.h>
diff --git a/tests/libdnssec/test_list.c b/tests/libdnssec/test_list.c
index cd0a0602b..f409638d4 100644
--- a/tests/libdnssec/test_list.c
+++ b/tests/libdnssec/test_list.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdint.h>
diff --git a/tests/libdnssec/test_nsec_bitmap.c b/tests/libdnssec/test_nsec_bitmap.c
index 37676fe0a..2737bc9c3 100644
--- a/tests/libdnssec/test_nsec_bitmap.c
+++ b/tests/libdnssec/test_nsec_bitmap.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/tests/libdnssec/test_nsec_hash.c b/tests/libdnssec/test_nsec_hash.c
index 47e4501a0..595a314ce 100644
--- a/tests/libdnssec/test_nsec_hash.c
+++ b/tests/libdnssec/test_nsec_hash.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <string.h>
diff --git a/tests/libdnssec/test_random.c b/tests/libdnssec/test_random.c
index 7c86aa6d5..d2c6867cf 100644
--- a/tests/libdnssec/test_random.c
+++ b/tests/libdnssec/test_random.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdint.h>
diff --git a/tests/libdnssec/test_shared_bignum.c b/tests/libdnssec/test_shared_bignum.c
index 0e8f8d52c..2099358c5 100644
--- a/tests/libdnssec/test_shared_bignum.c
+++ b/tests/libdnssec/test_shared_bignum.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <tap/basic.h>
diff --git a/tests/libdnssec/test_shared_dname.c b/tests/libdnssec/test_shared_dname.c
index 8eb93cf88..c636d27b6 100644
--- a/tests/libdnssec/test_shared_dname.c
+++ b/tests/libdnssec/test_shared_dname.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdbool.h>
diff --git a/tests/libdnssec/test_sign.c b/tests/libdnssec/test_sign.c
index 1f61d96dd..970ca4a7c 100644
--- a/tests/libdnssec/test_sign.c
+++ b/tests/libdnssec/test_sign.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <string.h>
diff --git a/tests/libdnssec/test_sign_der.c b/tests/libdnssec/test_sign_der.c
index 04bfeac5e..1514066ef 100644
--- a/tests/libdnssec/test_sign_der.c
+++ b/tests/libdnssec/test_sign_der.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <tap/basic.h>
diff --git a/tests/libdnssec/test_tsig.c b/tests/libdnssec/test_tsig.c
index 91674becf..50d91da10 100644
--- a/tests/libdnssec/test_tsig.c
+++ b/tests/libdnssec/test_tsig.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <tap/basic.h>
diff --git a/tests/libknot/test_control.c b/tests/libknot/test_control.c
index 3ec4daf66..7917d526e 100644
--- a/tests/libknot/test_control.c
+++ b/tests/libknot/test_control.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdlib.h>
diff --git a/tests/libknot/test_cookies.c b/tests/libknot/test_cookies.c
index b50b9409e..4c22d5fe9 100644
--- a/tests/libknot/test_cookies.c
+++ b/tests/libknot/test_cookies.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdlib.h>
diff --git a/tests/libknot/test_db.c b/tests/libknot/test_db.c
index 49bd6e4f7..e409ad810 100644
--- a/tests/libknot/test_db.c
+++ b/tests/libknot/test_db.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdbool.h>
diff --git a/tests/libknot/test_descriptor.c b/tests/libknot/test_descriptor.c
index ecb67974f..a0b7fb241 100644
--- a/tests/libknot/test_descriptor.c
+++ b/tests/libknot/test_descriptor.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdlib.h>
diff --git a/tests/libknot/test_dname.c b/tests/libknot/test_dname.c
index 1201d46bf..f5e0c7056 100644
--- a/tests/libknot/test_dname.c
+++ b/tests/libknot/test_dname.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdlib.h>
diff --git a/tests/libknot/test_edns.c b/tests/libknot/test_edns.c
index 0da882cb5..fdcee1d80 100644
--- a/tests/libknot/test_edns.c
+++ b/tests/libknot/test_edns.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <tap/basic.h>
diff --git a/tests/libknot/test_edns_ecs.c b/tests/libknot/test_edns_ecs.c
index 6733339a6..da487a64a 100644
--- a/tests/libknot/test_edns_ecs.c
+++ b/tests/libknot/test_edns_ecs.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/tests/libknot/test_endian.c b/tests/libknot/test_endian.c
index ef3fb1e5d..30f16f7b6 100644
--- a/tests/libknot/test_endian.c
+++ b/tests/libknot/test_endian.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdlib.h>
diff --git a/tests/libknot/test_lookup.c b/tests/libknot/test_lookup.c
index acb612f11..3f7b514b0 100644
--- a/tests/libknot/test_lookup.c
+++ b/tests/libknot/test_lookup.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <tap/basic.h>
diff --git a/tests/libknot/test_pkt.c b/tests/libknot/test_pkt.c
index 65458cd28..1a5338096 100644
--- a/tests/libknot/test_pkt.c
+++ b/tests/libknot/test_pkt.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <tap/basic.h>
diff --git a/tests/libknot/test_rdata.c b/tests/libknot/test_rdata.c
index 094cc4d26..754cd7f98 100644
--- a/tests/libknot/test_rdata.c
+++ b/tests/libknot/test_rdata.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdbool.h>
diff --git a/tests/libknot/test_rdataset.c b/tests/libknot/test_rdataset.c
index eb0dcbfc1..36f4dbaec 100644
--- a/tests/libknot/test_rdataset.c
+++ b/tests/libknot/test_rdataset.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/tests/libknot/test_rrset-wire.c b/tests/libknot/test_rrset-wire.c
index ea1d3c2a0..35dc1bc52 100644
--- a/tests/libknot/test_rrset-wire.c
+++ b/tests/libknot/test_rrset-wire.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/tests/libknot/test_rrset.c b/tests/libknot/test_rrset.c
index a0f1d53b8..a8dc20afd 100644
--- a/tests/libknot/test_rrset.c
+++ b/tests/libknot/test_rrset.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <assert.h>
diff --git a/tests/libknot/test_tsig.c b/tests/libknot/test_tsig.c
index 1a861c684..f4c1cb1c9 100644
--- a/tests/libknot/test_tsig.c
+++ b/tests/libknot/test_tsig.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <tap/basic.h>
diff --git a/tests/libknot/test_wire.c b/tests/libknot/test_wire.c
index 70617f946..3e2468cbc 100644
--- a/tests/libknot/test_wire.c
+++ b/tests/libknot/test_wire.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <tap/basic.h>
diff --git a/tests/libknot/test_yparser.c b/tests/libknot/test_yparser.c
index 2c27fdb6b..676538979 100644
--- a/tests/libknot/test_yparser.c
+++ b/tests/libknot/test_yparser.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdlib.h>
diff --git a/tests/libknot/test_ypschema.c b/tests/libknot/test_ypschema.c
index 50d56f6d4..f921be329 100644
--- a/tests/libknot/test_ypschema.c
+++ b/tests/libknot/test_ypschema.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdlib.h>
diff --git a/tests/libknot/test_yptrafo.c b/tests/libknot/test_yptrafo.c
index 3014a27b2..39cead249 100644
--- a/tests/libknot/test_yptrafo.c
+++ b/tests/libknot/test_yptrafo.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <stdlib.h>
diff --git a/tests/libzscanner/processing.c b/tests/libzscanner/processing.c
index a5ddeaa3d..f6fed34d1 100644
--- a/tests/libzscanner/processing.c
+++ b/tests/libzscanner/processing.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <inttypes.h>
diff --git a/tests/libzscanner/processing.h b/tests/libzscanner/processing.h
index fe66737ba..bd3390b62 100644
--- a/tests/libzscanner/processing.h
+++ b/tests/libzscanner/processing.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
diff --git a/tests/libzscanner/zscanner-tool.c b/tests/libzscanner/zscanner-tool.c
index 06b795c11..5d9dfb226 100644
--- a/tests/libzscanner/zscanner-tool.c
+++ b/tests/libzscanner/zscanner-tool.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <getopt.h>
diff --git a/tests/modules/test_onlinesign.c b/tests/modules/test_onlinesign.c
index e2b3e8978..6ff5d8372 100644
--- a/tests/modules/test_onlinesign.c
+++ b/tests/modules/test_onlinesign.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <tap/basic.h>
diff --git a/tests/modules/test_rrl.c b/tests/modules/test_rrl.c
index b7aef4e4d..bbcc5be86 100644
--- a/tests/modules/test_rrl.c
+++ b/tests/modules/test_rrl.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <tap/basic.h>
diff --git a/tests/tap/files.c b/tests/tap/files.c
index 2e67e9e57..ebc63dcac 100644
--- a/tests/tap/files.c
+++ b/tests/tap/files.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "files.h"
diff --git a/tests/tap/files.h b/tests/tap/files.h
index bfc609058..f216d05e4 100644
--- a/tests/tap/files.h
+++ b/tests/tap/files.h
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/tests/utils/test_cert.c b/tests/utils/test_cert.c
index 308911635..364fc0856 100644
--- a/tests/utils/test_cert.c
+++ b/tests/utils/test_cert.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "utils/common/cert.h"
diff --git a/tests/utils/test_lookup.c b/tests/utils/test_lookup.c
index 111eb26be..ddb0f9d24 100644
--- a/tests/utils/test_lookup.c
+++ b/tests/utils/test_lookup.c
@@ -11,7 +11,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <stdlib.h>