diff --git a/Traits/ControllerTrait.php b/Traits/ControllerTrait.php
index 793c912..62675c3 100644
--- a/Traits/ControllerTrait.php
+++ b/Traits/ControllerTrait.php
@@ -20,6 +20,9 @@ public static function getSubscribedServices(): array
 } else {
     trait ControllerTrait
     {
+        /**
+         * @return array<string, class-string>
+         */
         public static function getSubscribedServices()
         {
             return array_merge(parent::getSubscribedServices(), [