diff --git a/CHANGELOG.md b/CHANGELOG.md
index 19bcc3648b..c39f4ffba9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 All notable changes to this project will be documented in this file.
 
+## [5.5.6] - 2023-10-09
+
+### Bug Fixes
+
+- Only delete SSO-synced group membership where membership was added by SSO sync (#4929)
+
 ## [5.5.5] - 2023-10-04
 
 ### Bug Fixes