diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7afa3a4c..5c208226 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]
 
+## [2.64.1] - 2025-12-18
+
 - Update `tombi@latest` to 0.7.8.
 
 - Update `mise@latest` to 2025.12.11.
@@ -5151,7 +5153,8 @@ Note: This release is considered a breaking change because installing on version
 
 Initial release
 
-[Unreleased]: https://github.com/taiki-e/install-action/compare/v2.64.0...HEAD
+[Unreleased]: https://github.com/taiki-e/install-action/compare/v2.64.1...HEAD
+[2.64.1]: https://github.com/taiki-e/install-action/compare/v2.64.0...v2.64.1
 [2.64.0]: https://github.com/taiki-e/install-action/compare/v2.63.3...v2.64.0
 [2.63.3]: https://github.com/taiki-e/install-action/compare/v2.63.2...v2.63.3
 [2.63.2]: https://github.com/taiki-e/install-action/compare/v2.63.1...v2.63.2