diff --git a/composer.json b/composer.json
index 4112937..59d931f 100644
--- a/composer.json
+++ b/composer.json
@@ -26,7 +26,7 @@
         "phpunit/phpunit": "~4.8",
         "satooshi/php-coveralls": "~1.0",
         "squizlabs/php_codesniffer": "~2.6",
-        "friendsofphp/php-cs-fixer": "~1.12"
+        "friendsofphp/php-cs-fixer": "3.6.0"
     },
     "autoload": {
         "psr-4": {