diff --git a/util/copyrights b/util/copyrights
index 25dabb4db6..e3b3d7d466 100644
--- a/util/copyrights
+++ b/util/copyrights
@@ -91,7 +91,7 @@
 ./bin/dig/Makefile.in				MAKE	2000,2001,2002,2004,2005,2007,2009,2012,2013,2014,2015,2016
 ./bin/dig/dig.1					MAN	DOCBOOK
 ./bin/dig/dig.c					C	2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016
-./bin/dig/dig.docbook				SGML	2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010,2011,2013,2014,2015,2016
+./bin/dig/dig.docbook				SGML	2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010,2011,2013,2014,2015,2016,2017
 ./bin/dig/dig.html				HTML	DOCBOOK
 ./bin/dig/dighost.c				C	2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016
 ./bin/dig/host.1				MAN	DOCBOOK