diff --git a/composer.json b/composer.json
index 34fd5dc78..3f29b8d4c 100644
--- a/composer.json
+++ b/composer.json
@@ -31,7 +31,8 @@
         },
         {
             "type": "composer",
-            "url": "https://packages.drupal.org/8"
+            "url": "https://packages.drupal.org/8",
+            "only": ["drupal/*"]
         },
         {
             "type": "composer",