diff --git a/composer.json b/composer.json
index fac6c53..9b1cc88 100644
--- a/composer.json
+++ b/composer.json
@@ -28,7 +28,8 @@
           "h5p-development.class.php",
           "h5p-file-storage.interface.php",
           "h5p-default-storage.class.php",
-          "h5p-event-base.class.php"
+          "h5p-event-base.class.php",
+          "h5p-metadata.class.php"
         ]
     }
 }