diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9e7bc80e..9fcda931 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]
 
+## [2.18.5] - 2023-09-09
+
 - Update `cargo-no-dev-deps@latest` to 0.2.5.
 
 - Update `cargo-minimal-versions@latest` to 0.1.17.
@@ -1185,7 +1187,8 @@ Note: This release is considered a breaking change because installing on version
 
 Initial release
 
-[Unreleased]: https://github.com/taiki-e/install-action/compare/v2.18.4...HEAD
+[Unreleased]: https://github.com/taiki-e/install-action/compare/v2.18.5...HEAD
+[2.18.5]: https://github.com/taiki-e/install-action/compare/v2.18.4...v2.18.5
 [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