diff --git a/CHANGELOG.md b/CHANGELOG.md
index d6408307..9e5faad1 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]
 
+## [2.85.6] - 2026-08-01
+
 - Update `wasm-tools@latest` to 1.255.0.
 
 - Update `tombi@latest` to 1.2.5.
@@ -7166,7 +7168,8 @@ Note: This release is considered a breaking change because installing on version
 
 Initial release
 
-[Unreleased]: https://github.com/taiki-e/install-action/compare/v2.85.5...HEAD
+[Unreleased]: https://github.com/taiki-e/install-action/compare/v2.85.6...HEAD
+[2.85.6]: https://github.com/taiki-e/install-action/compare/v2.85.5...v2.85.6
 [2.85.5]: https://github.com/taiki-e/install-action/compare/v2.85.4...v2.85.5
 [2.85.4]: https://github.com/taiki-e/install-action/compare/v2.85.3...v2.85.4
 [2.85.3]: https://github.com/taiki-e/install-action/compare/v2.85.2...v2.85.3