Update composer.json

Author: 66Ton99

composer.json

@@ -26,7 +26,7 @@
     "require-dev": {
         "doctrine/orm": ">=2.2.3",
         "doctrine/doctrine-bundle": "~1.2",
-        "symfony/symfony": ">=2.5.5",
+        "symfony/symfony": ">=2.5.3",
         "symfony/assetic-bundle": ">=2.3",
         "phpunit/phpunit": "3.7.*",
         "behat/mink-bundle": "dev-master",