diff --git a/composer.json b/composer.json
index 15b7b68..757a93c 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
     },
     "require": {
         "php": ">=5.5.0",
-        "guzzlehttp/guzzle": "^6.0"
+        "guzzlehttp/guzzle": "^7.0"
     },
     "require-dev": {
         "phpunit/phpunit": "4.*",