diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0d89a04..ad3e575 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).
 
 ## [Unreleased]
+
+## [0.4.0] - 2023-03-10
 ### Added
 - Configuration option `build_tools` which allows selection of one's preferred build tool to run tests.
 ### Changed