diff --git a/composer.json b/composer.json
index 12a5b9c..dc59298 100644
--- a/composer.json
+++ b/composer.json
@@ -22,7 +22,7 @@
         "phpunit/phpunit": "^8.0",
         "roave/security-advisories": "dev-master",
         "sensiolabs-de/deptrac-shim": "^0.12.0 || ^0.13.0",
-        "symplify/easy-coding-standard": "8.3.*",
+        "symplify/easy-coding-standard": "8.3.* || 9.3.*",
         "vimeo/psalm": "^4.7",
         "phan/phan": "4.0.*"
     },