diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1b24513..467615d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,10 +10,13 @@ Types of changes
     Security in case of vulnerabilities.
 )
 
-## [1.5.1](https://github.com/pdir/mae_event_categories/tree/1.5.1) – 2023-08-16
+## [1.5.2](https://github.com/pdir/mae_event_categories/tree/1.5.2) – 2023-08-16
 
 - [Fixed] css class added [#16](https://github.com/pdir/mae_event_categories/issues/16) 🤗 [akroii](https://github.com/akroii)
 
+## [1.5.1](https://github.com/pdir/mae_event_categories/tree/1.5.1) – 2017-08-18
+
+- [Added] unlock Contao 4 🤗 [fritzmg](https://github.com/fritzmg)
 
 Version 1.5.0        (2016-08-03) added 'only filter by categories, assigned to future events' to the event filter module
 Version 1.4.0 RC1    (2016-04-29) added sortable cat filter list and filter url friendlieness