diff --git a/composer.json b/composer.json
index 8237228..710679d 100644
--- a/composer.json
+++ b/composer.json
@@ -10,7 +10,7 @@
     ],
     "minimum-stability": "stable",
     "require": {
-        "guzzlehttp/guzzle": "^6.2"
+        "guzzlehttp/guzzle": "^7.0.1"
     },
     "require-dev": {
         "phpunit/phpunit": "6.3.*",