diff --git a/composer.json b/composer.json
index 8bd037f..ab2a0c0 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,7 @@
     }
   ],
   "require": {
-    "php": "^5.6",
+    "php": ">=5.6",
     "ext-curl": "*"
   },
   "require-dev": {