diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1f1780e4a0487d42b1470206e1871c2d3c98f46f..30863529c981a3cbd9137b980b736a2800286bbc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@ 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).
 
-## [Unreleased]
+## [4.0.0]
 
 ### New Features
 * Block module loading after iocInit has been invoked.