diff --git a/framework/core/composer.json b/framework/core/composer.json
index f2e18d97d..e01a7b070 100644
--- a/framework/core/composer.json
+++ b/framework/core/composer.json
@@ -8,7 +8,7 @@
         }
     ],
     "require": {
-        "php": ">=5.4.0",
+        "php": ">=5.5.9",
         "illuminate/bus": "5.1.*",
         "illuminate/cache": "5.1.*",
         "illuminate/config": "5.1.*",