diff --git a/composer.json b/composer.json
index 6d8a362..1dd5962 100644
--- a/composer.json
+++ b/composer.json
@@ -29,7 +29,7 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^8.5",
-        "squizlabs/php_codesniffer": "~2.2 || ~3.0",
+        "squizlabs/php_codesniffer": "~2.2 || ~3.0 || ~4.0",
         "rector/rector": "^0.7.63 || ^0.8.0 || ^0.18.0"
     },
     "suggest": {