diff --git a/CHANGELOG.md b/CHANGELOG.md
index 53a45a8c..e576680e 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]
 
+## [2.20.6] - 2023-10-17
+
 - Update `cargo-hack@latest` to 0.6.10.
 
 ## [2.20.5] - 2023-10-17
@@ -1313,7 +1315,8 @@ Note: This release is considered a breaking change because installing on version
 
 Initial release
 
-[Unreleased]: https://github.com/taiki-e/install-action/compare/v2.20.5...HEAD
+[Unreleased]: https://github.com/taiki-e/install-action/compare/v2.20.6...HEAD
+[2.20.6]: https://github.com/taiki-e/install-action/compare/v2.20.5...v2.20.6
 [2.20.5]: https://github.com/taiki-e/install-action/compare/v2.20.4...v2.20.5
 [2.20.4]: https://github.com/taiki-e/install-action/compare/v2.20.3...v2.20.4
 [2.20.3]: https://github.com/taiki-e/install-action/compare/v2.20.2...v2.20.3