diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0c9de164..95c99485 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]
 
+## [2.18.15] - 2023-09-22
+
 - Update `cargo-careful@latest` to 0.4.0.
 
 ## [2.18.14] - 2023-09-21
@@ -1241,7 +1243,8 @@ Note: This release is considered a breaking change because installing on version
 
 Initial release
 
-[Unreleased]: https://github.com/taiki-e/install-action/compare/v2.18.14...HEAD
+[Unreleased]: https://github.com/taiki-e/install-action/compare/v2.18.15...HEAD
+[2.18.15]: https://github.com/taiki-e/install-action/compare/v2.18.14...v2.18.15
 [2.18.14]: https://github.com/taiki-e/install-action/compare/v2.18.13...v2.18.14
 [2.18.13]: https://github.com/taiki-e/install-action/compare/v2.18.12...v2.18.13
 [2.18.12]: https://github.com/taiki-e/install-action/compare/v2.18.11...v2.18.12