diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9caf1b2..6a33f87 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,9 @@
 
 ## [Unreleased]
 
-<!--
+## [1.0.0] - 2023-12-09
+
+Initial Release
+
 [Unreleased]: https://github.com/beste/in-memory-cache-php/compare/1.0.0...main
 [1.0.0]: https://github.com/beste/in-memory-cache-php/tree/1.0.0
--->