diff --git a/composer.json b/composer.json
index 92d2878..d0126f7 100644
--- a/composer.json
+++ b/composer.json
@@ -28,7 +28,7 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^7.4",
-        "squizlabs/php_codesniffer": "~2.6",
+        "squizlabs/php_codesniffer": "~2.6 || ~3.0",
         "friendsofphp/php-cs-fixer": "~2.12"
     },
     "autoload": {