diff --git a/composer.json b/composer.json
index ff8f330..995ebc0 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
 
     "require": {
         "php": ">=5.5.0",
-        "guzzlehttp/guzzle": "~5.0|~6.0"
+        "guzzlehttp/guzzle": "~5.0|~6.0|~7.0"
     },
 
     "require-dev": {