diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6a1b588..8d8f41b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [v4.2.1] - unreleased
+## [v4.2.2] - 2021-09-30
+### Added
+- `debug.notes` front matter field
+
+## [v4.2.1] - 2021-04-13
 ### Fixed
 - Transpiled KSAs no longer dropped