diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8a4aec8..7484c57 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # CHANGELOG
 
-## Unreleased
+## 4.0.0 - 2022-11-26
 
 The most notable change is that you need PHP 8.1/8.2 to use the new version. The language migration to
 PHP 8.1 introduces potentially breaking changes concerning the strictness of parameter types -