diff --git a/composer.json b/composer.json
index fefeb6d5112..bb0965e0bbe 100644
--- a/composer.json
+++ b/composer.json
@@ -38,7 +38,7 @@
         "ircmaxell/random-lib": "dev-master",
         "ircmaxell/security-lib": "dev-master",
         "mikey179/vfsStream": "1.2.*",
-        "fabpot/php-cs-fixer": "*@dev",
+        "fabpot/php-cs-fixer": "dev-master#2f1df1d",
         "phpunit/PHPUnit": "3.7.*",
         "satooshi/php-coveralls": "dev-master",
         "sebastianbergmann/phpcov": "1.1.0"