diff --git a/CHANGELOG.md b/CHANGELOG.md
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--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Changelog
 
+## [v3.1.2](https://github.com/shamaton/msgpack/compare/v3.1.1...v3.1.2) - 2026-05-19
+- chore: clean up and pin GitHub Actions workflows by @shamaton in https://github.com/shamaton/msgpack/pull/71
+- Bump codecov/codecov-action from 6.0.0 to 6.0.1 by @dependabot[bot] in https://github.com/shamaton/msgpack/pull/73
+- fix: harden numeric conversions for gosec by @shamaton in https://github.com/shamaton/msgpack/pull/74
+
 ## [v3.1.1](https://github.com/shamaton/msgpack/compare/v3.1.0...v3.1.1) - 2026-05-12
 - chore: isolate formatting cleanup from #60 by @shamaton in https://github.com/shamaton/msgpack/pull/61
 - Add tagpr configuration by @shamaton in https://github.com/shamaton/msgpack/pull/63