diff --git a/composer.json b/composer.json
index 7539e42..f5a8b8b 100644
--- a/composer.json
+++ b/composer.json
@@ -20,7 +20,7 @@
     "require-dev": {
         "icanhazstring/composer-unused": "^0.8.9",
         "infection/infection": "^0.27",
-        "phpro/grumphp": "~0.17 || ~1.0",
+        "phpro/grumphp": "~0.17 || ~1.0 || ~2.0",
         "phpstan/phpstan": "^1.10",
         "phpunit/phpunit": "^8.0 || ^9.0",
         "squizlabs/php_codesniffer": "^3.4"