diff --git a/composer.json b/composer.json
index d1317f0..bd5111b 100644
--- a/composer.json
+++ b/composer.json
@@ -24,7 +24,7 @@
     "require-dev": {
         "mockery/mockery": "~1.3",
         "phpunit/phpunit": "^5.0",
-        "squizlabs/php_codesniffer": "^2.0",
+        "squizlabs/php_codesniffer": "^3.6",
         "friendsofphp/php-cs-fixer": "~2.19",
         "jakub-onderka/php-parallel-lint": "~0.9",
         "phpstan/phpstan": "^0.12.89"