diff --git a/composer.json b/composer.json
index e108a287..1743c4b7 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
         }
     ],
     "require": {
-        "php": ">=5.5.9",
+        "php": "^5.5.9",
         "laravel/framework": "5.1.*",
         "cachethq/segment": "^2.1",
         "doctrine/dbal": "^2.5",