diff --git a/composer.json b/composer.json
index 10a766e..55b8577 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
         "vimeo/psalm": "^4.3.1",
         "phpmd/phpmd": "^2.9",
         "squizlabs/php_codesniffer": "^3.5",
-        "phpro/grumphp": "^0.19 || ^1.2.0"
+        "phpro/grumphp": "^2.6.0"
     },
     "license": "MIT",
     "authors": [