diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2b03ec28..66ff6656 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]
 
+## [2.18.4] - 2023-09-09
+
 - Update `cargo-hack@latest` to 0.6.6.
 
 ## [2.18.3] - 2023-09-08
@@ -1179,7 +1181,8 @@ Note: This release is considered a breaking change because installing on version
 
 Initial release
 
-[Unreleased]: https://github.com/taiki-e/install-action/compare/v2.18.3...HEAD
+[Unreleased]: https://github.com/taiki-e/install-action/compare/v2.18.4...HEAD
+[2.18.4]: https://github.com/taiki-e/install-action/compare/v2.18.3...v2.18.4
 [2.18.3]: https://github.com/taiki-e/install-action/compare/v2.18.2...v2.18.3
 [2.18.2]: https://github.com/taiki-e/install-action/compare/v2.18.1...v2.18.2
 [2.18.1]: https://github.com/taiki-e/install-action/compare/v2.18.0...v2.18.1