diff --git a/CHANGELOG.md b/CHANGELOG.md
index b77888084..7b2dcfc34 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## Fixes
 
+- Bugfix in `Service11TelecommandScheduling` which allowed commands
+  time tagged in the past to be inserted.
+  PR: https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/738
 - `CService200ModeManagement`: Various bugfixes which lead to now execution complete being generated
   on mode announcements, duplicate mode reply generated on announce commands, and the mode read
   subservice not working properly.