diff --git a/composer.json b/composer.json
index bad036f..b8fd137 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,8 @@
     "source": "http://cgit.drupalcode.org/content_model_documentation"
   },
   "require": {
-    "drupal/config_views": "~2.0"
+    "drupal/config_views": "~2.0",
+    "drupal/core": "^9 || ^10"
   },
   "require-dev": { }
 }