diff --git a/composer.json b/composer.json
index b547073..e6e77ff 100755
--- a/composer.json
+++ b/composer.json
@@ -12,7 +12,7 @@
         }
     ],
     "require": {
-        "php": ">=5.4|^7.0",
+        "php": "~5.4,^7.0",
         "symfony/symfony": "~2.5",
         "doctrine/orm": "~2.2,2.5.*",
         "jms/serializer": ">=0.12,~1.0,^1.1",