diff --git a/composer.json b/composer.json
index 4112937..d10a24c 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
     "require-dev": {
         "phpunit/phpunit": "~4.8",
         "satooshi/php-coveralls": "~1.0",
-        "squizlabs/php_codesniffer": "~2.6",
+        "squizlabs/php_codesniffer": "3.7.1",
         "friendsofphp/php-cs-fixer": "~1.12"
     },
     "autoload": {