diff --git a/composer.json b/composer.json
index 100670a..4caf4ed 100644
--- a/composer.json
+++ b/composer.json
@@ -28,7 +28,7 @@
         "phing/phing": "^2.16",
         "phpmd/phpmd": "^2.6",
         "phpstan/phpstan": "^0.10.1",
-        "slevomat/coding-standard": "^5.0",
+        "slevomat/coding-standard": "^6.1",
         "squizlabs/php_codesniffer": "^3.1",
         "phpstan/phpstan-phpunit": "^0.10.0",
         "infection/infection": "^0.12.2",