diff --git a/composer.json b/composer.json
index 7a079c3..f9d4d6a 100644
--- a/composer.json
+++ b/composer.json
@@ -12,7 +12,7 @@
         }
     ],
     "require": {
-        "php": ">=5.4.0"
+        "php": "^5.4|^7.0"
     },
     "require-dev": {
         "pda/pheanstalk": "~3.0"