diff --git a/changelog.md b/changelog.md
index 1fa039b..36350e6 100644
--- a/changelog.md
+++ b/changelog.md
@@ -5,7 +5,7 @@ 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).
 
-## [0.4.0] - 2025-12-22
+## [0.4.0] - [Unreleased]
 ### Added
 - **Matrix Support**: Added matrix proxy object and build-time validation to prevent usage of undefined matrix variables. ([#62])