diff --git a/CHANGELOG.md b/CHANGELOG.md
index f1d32172..3cf715ce 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]
 
+## [2.40.0] - 2024-06-19
+
 - Fix an installation issue on some container environments. ([#545](https://github.com/taiki-e/install-action/pull/545))
 
 ## [2.39.2] - 2024-06-18
@@ -2354,7 +2356,8 @@ Note: This release is considered a breaking change because installing on version
 
 Initial release
 
-[Unreleased]: https://github.com/taiki-e/install-action/compare/v2.39.2...HEAD
+[Unreleased]: https://github.com/taiki-e/install-action/compare/v2.40.0...HEAD
+[2.40.0]: https://github.com/taiki-e/install-action/compare/v2.39.2...v2.40.0
 [2.39.2]: https://github.com/taiki-e/install-action/compare/v2.39.1...v2.39.2
 [2.39.1]: https://github.com/taiki-e/install-action/compare/v2.39.0...v2.39.1
 [2.39.0]: https://github.com/taiki-e/install-action/compare/v2.38.7...v2.39.0