diff --git a/CHANGELOG.md b/CHANGELOG.md
index 15a61af..2ea8b34 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,3 +6,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+
+- First release
+
+## [0.0.0]
+
+[Unreleased]: https://github.com/kou029w/subresourceintegrity
+[0.0.0]: https://github.com/kou029w/subresourceintegrity