diff --git a/CHANGELOG.md b/CHANGELOG.md
index d0ec142..de8e097 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 [Semantic Versioning](https://semver.org/spec/v2.0.0.html). Please note this changelog affects this package and not the 
 WeFact API. See the changelog of the [WeFact API](https://www.wefact.nl/api/changelog/) for detailed information.
 
-## [4.0.0]
+## [5.0.0]
 
 ### Added
 
diff --git a/src/WeFact.php b/src/WeFact.php
index 32b786f..44271fa 100644
--- a/src/WeFact.php
+++ b/src/WeFact.php
@@ -13,7 +13,7 @@ class WeFact extends Factory
 
     private const TIMEOUT = 180;
 
-    private const VERSION = '4.0.0';
+    private const VERSION = '5.0.0';
 
     private const USER_AGENT = 'vdhicts-wefact-api-client/' . self::VERSION;