diff --git a/CHANGELOG.md b/CHANGELOG.md
index 58d6bca..10178e4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,7 +6,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 This changelog is automatically generated using [git-cliff](https://git-cliff.org).
 
-## [Unreleased]
+## [4.0.0] - 2026-03-17
 
 ### Features