diff --git a/CHANGELOG.md b/CHANGELOG.md
index ad83b72..888fa6a 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), and this project adheres to [Semantic Versioning](https://semver.org).
 
-## [Unreleased]
+## [4.0.0] - 2024-03-03
 ### Added
 * *Nothing*
 
diff --git a/composer.json b/composer.json
index d7157b8..1b61ace 100644
--- a/composer.json
+++ b/composer.json
@@ -70,8 +70,7 @@
         "sort-packages": true,
         "allow-plugins": {
             "composer/package-versions-deprecated": true,
-            "dealerdirect/phpcodesniffer-composer-installer": true,
-            "infection/extension-installer": true
+            "dealerdirect/phpcodesniffer-composer-installer": true
         }
     }
 }