diff --git a/CHANGELOG.md b/CHANGELOG.md
index be1227cd..62fc7b20 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Release Notes for Campaign
 
-## 3.5.9 - Unreleased
+## 3.5.9 - 2024-12-31
 
 ### Changed