diff --git a/composer.json b/composer.json
index 4cb77c6..dbc204b 100644
--- a/composer.json
+++ b/composer.json
@@ -78,7 +78,7 @@
         "drupal/webform": "^5.4",
         "drush/drush": "^9.0",
         "drutopia/drutopia": "dev-8.x-1.x",
-        "wikimedia/composer-merge-plugin": "^1.4"
+        "wikimedia/composer-merge-plugin": "^2.0"
     },
     "require-dev": {
         "behat/behat": "^3.4",