diff --git a/CHANGELOG.md b/CHANGELOG.md
index 566636b2..08f4ab32 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,8 @@ Note: In this file, do not use the hard wrap in the middle of a sentence for com
 
 ## [Unreleased]
 
+## [2.56.9] - 2025-07-09
+
 - Update `vacuum@latest` to 0.17.4.
 
 - Update `release-plz@latest` to 0.3.138.
@@ -4108,7 +4110,8 @@ Note: This release is considered a breaking change because installing on version
 
 Initial release
 
-[Unreleased]: https://github.com/taiki-e/install-action/compare/v2.56.8...HEAD
+[Unreleased]: https://github.com/taiki-e/install-action/compare/v2.56.9...HEAD
+[2.56.9]: https://github.com/taiki-e/install-action/compare/v2.56.8...v2.56.9
 [2.56.8]: https://github.com/taiki-e/install-action/compare/v2.56.7...v2.56.8
 [2.56.7]: https://github.com/taiki-e/install-action/compare/v2.56.6...v2.56.7
 [2.56.6]: https://github.com/taiki-e/install-action/compare/v2.56.5...v2.56.6