diff --git a/composer.json b/composer.json
index 340dd96..55358b1 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
         }
     ],
     "require": {
-        "php": ">=5.4",
+        "php": ">=5.5",
         "silex/silex": "1.x",
         "etna/rabbitmq-service-provider": "0.x"
     },