diff --git a/CHANGELOG.md b/CHANGELOG.md
index 32376fa..5c05525 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@ Format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/); version
 
 ## [Unreleased]
 
+## [0.4.0] - 2026-08-04
+
 ### Added
 
 - The project's mark is now in use rather than only on file. The README opens