diff --git a/CHANGELOG.md b/CHANGELOG.md
index 739290a..0cffead 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,11 +2,11 @@
 
 This file is used to list changes made in each version of the postfix cookbook.
 
-## Unreleased ## Unreleased
+## 6.4.0 - *2025-07-30* ## 6.4.0 - *2025-07-30*
 
 Standardise files with files in sous-chefs/repo-management
 
-## Unreleased
+## 6.4.0 - *2025-07-30*
 
 ## 6.3.0 - *2025-07-30*