diff --git a/CHANGELOG.md b/CHANGELOG.md
index 01c4e65b..de576ea6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -36,6 +36,7 @@ will consitute of a breaking change warranting a new major release:
   controller as well as settings of the low-pass filters can be handled via parameter commands.
 - Simplify and fix the chip and copy protection functions in the core controller. This mechanism
   now is always performed for the target chip and target copy in the reboot handlers.
+- Improvement in FSFW: HK generation is now countdown based.
 
 ## Added