diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9d4cb940..34a7850c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,7 +14,7 @@ will consitute of a breaking change warranting a new major release:
 - The TMTC interface changes in any shape of form.
 - The behaviour of the OBSW changes in a major shape or form relevant for operations
 
-# [v7.5.0] 2023-12-XX
+# [v7.5.0] 2023-12-06
 
 ## Changed
 
@@ -26,6 +26,13 @@ will consitute of a breaking change warranting a new major release:
 - Added action cmd to read the currently stored TLE.
 - Both the `AcsController` and the `PwrController` now use the monotonic clock to calculate
   the time difference.
+ 
+## Added
+
+- Higher ACS modes can now be entered without a running `MEKF`. Higher modes will collect their
+  quaternion and rotational rate depending on the available sources.
+- `QUEST` attitude estimation was added to the `AcsController`.
+- The fused rotational rate can now be estimated from `QUEST` and the `STR`.
 
 # [v7.4.1] 2023-12-06