diff --git a/src/Models/MailgunEvent.php b/src/Models/MailgunEvent.php
index 658e26f..9234afe 100644
--- a/src/Models/MailgunEvent.php
+++ b/src/Models/MailgunEvent.php
@@ -146,7 +146,7 @@ public function requireDefaultRecords()
     /**
      * Set permission groups
      */
-    final private function createGroupsAndPermissions()
+    private function createGroupsAndPermissions()
     {
         $manager_code = 'mailgun-managers';
         $manager_group = Group::get()->filter('Code', $manager_code)->first();