diff --git a/CHANGELOG.md b/CHANGELOG.md
index d4efb8dbf..5db77e799 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -579,6 +579,20 @@ Add `linux_netdev` check command. #9045
 * Several code quality improvements. #8815 #9106 #9250
   #9508 #9517 #9537 #9594 #9605 #9606 #9641 #9658 #9702 #9717 #9738
 
+## 2.13.13 (2025-10-16)
+
+This version includes a fix for sending signals and updates dependencies used
+in Windows builds.
+
+Note that one fix affects the logrotate configuration. If it was modified
+locally, it might not be updated automatically by the package manager and
+applying the changes manually is necessary. For details, please check the
+[upgrading docs](https://icinga.com/docs/icinga-2/latest/doc/16-upgrading-icinga-2/#upgrading-to-2-15-1).
+
+* Don't send signals as root in safe-reload script and logrotate config. #10601
+* Windows: Update to OpenSSL 3.0.18. #10602
+* Windows: upgrade build toolchain to Visual Studio 2022. #10598
+
 ## 2.13.12 (2025-05-27)
 
 This security release fixes a critical issue in the certificate renewal logic in Icinga 2, which