diff --git a/CHANGELOG.md b/CHANGELOG.md
index 13ae3b3..38cd7d6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@ 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).
 
 ## [v4.1.0-pre] - Unreleased
+
+## [v4.0.1] - 2020-10-27
 ### Fixed
 - Clear Debug.summary field when making mothballs