diff --git a/src/Apps/ConfigAppManager.php b/src/Apps/ConfigAppManager.php
index 6d8513e..03e5458 100644
--- a/src/Apps/ConfigAppManager.php
+++ b/src/Apps/ConfigAppManager.php
@@ -38,7 +38,7 @@ class ConfigAppManager implements AppManager
     /**
      * Get app by id.
      *
-     * @param  int  $appId
+     * @param  string|int  $appId
      * @return \BeyondCode\LaravelWebSockets\Apps\App|null
      */
     public function findById($appId): ?App