diff --git a/CHANGELOG.md b/CHANGELOG.md
index f83c5078f..67361a9c1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,12 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 # [unreleased]
 
+## Changes
+
+- Removed `HasReturnvaluesIF` class in favor of `returnvalue` namespace with `OK` and `FAILED`
+  constants.
+  PR: https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/659
+
 # [v5.0.0] 25.07.2022
 
 ## Changes