diff --git a/composer.json b/composer.json
index 5bec2ee..6961310 100644
--- a/composer.json
+++ b/composer.json
@@ -3,6 +3,12 @@
   "description": "Drupal is an open source content management platform powering millions of websites and applications.",
   "type": "project",
   "license": "GPL-2.0+",
+  "repositories": [
+    {
+      "type": "composer",
+      "url": "https://packagist.drupal-composer.org"
+    }
+  ],
   "require": {
     "composer/installers": "^1.0.20",
     "drupal/core": "~8.0"