diff --git a/src/ContaoManager/Plugin.php b/src/ContaoManager/Plugin.php
index 9a2b985..440f30a 100644
--- a/src/ContaoManager/Plugin.php
+++ b/src/ContaoManager/Plugin.php
@@ -33,7 +33,7 @@ class Plugin implements BundlePluginInterface
     /**
      * {@inheritdoc}
      */
-    public function getBundles(ParserInterface $parser)
+    public function getBundles(ParserInterface $parser): array
     {
         return [
             BundleConfig::create(CcaDcGeneralContaoFrontendBundle::class)