diff --git a/composer.json b/composer.json
index 6fb767b..96cff78 100644
--- a/composer.json
+++ b/composer.json
@@ -15,7 +15,7 @@
     }
   ],
   "require" : {
-    "guzzlehttp/guzzle": "^6.2"
+    "guzzlehttp/guzzle": "^6.2|^7.2"
   },
   "require-dev": {
     "phpunit/phpunit": "~5.0",