diff --git a/composer.json b/composer.json
index 5dfafe2..44d8293 100644
--- a/composer.json
+++ b/composer.json
@@ -36,7 +36,7 @@
         "orchestra/testbench": "^6.0|^7.0",
         "phpmd/phpmd": "^2.6",
         "phpunit/phpunit": "9.*",
-        "slevomat/coding-standard": "7.1",
+        "slevomat/coding-standard": "8.8.0",
         "squizlabs/php_codesniffer": "^3.5"
     },
     "autoload": {