diff --git a/composer.json b/composer.json
index 0566338..6ab4d8b 100644
--- a/composer.json
+++ b/composer.json
@@ -7,7 +7,7 @@
     "cweagans/composer-patches": "^1.0",
     "drupal/coder": "^8.3.9",
     "phpmd/phpmd" : "^2.6",
-    "phpro/grumphp": "~0.17.2",
+    "phpro/grumphp": "~0.18.1",
     "squizlabs/php_codesniffer": "^3.5"
   },
   "require-dev": {