diff --git a/lib/Listener/PostLoginListener.php b/lib/Listener/PostLoginListener.php
index 224a38193..caa9938d0 100644
--- a/lib/Listener/PostLoginListener.php
+++ b/lib/Listener/PostLoginListener.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /**
  * @copyright Copyright (c) 2022 Nikita Toponen <natoponen@gmail.com>
  *