diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6fb13142..d0738667 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,7 +17,10 @@ will consitute of a breaking change warranting a new major release:
 # [unreleased]
 
 ## Changed
+
 - The primary and the secondary temperature sensors for the PLOC mission boards are exchanged.
+- ACS parameters for the SUSMGM (FLP) safe mode have been adjusted. This safe mode is now the
+  default one.
 
 # [v6.4.1] 2023-08-21