diff --git a/CHANGELOG.md b/CHANGELOG.md
index 298a54c..059b9c3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,7 @@ All notable changes to the [Challenges](https://github.com/mauritssilvis/challen
 The file 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]
+## [0.4.0] - 2023-12-01
 
 ### Changed