diff --git a/composer.json b/composer.json
index c4119b8..b029318 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,6 @@
         }
     ],
     "require": {
-        "php": "~7.1",
         "php-http/httplug": "~1",
         "php-http/discovery": "^1.0",
         "php-http/message-factory": "^1.0"