diff --git a/vendor-bin/behat/composer.json b/vendor-bin/behat/composer.json
index 15110301..a32bb93a 100644
--- a/vendor-bin/behat/composer.json
+++ b/vendor-bin/behat/composer.json
@@ -15,7 +15,7 @@
         "symfony/translation": "^3.4",
         "sabre/dav": "^4.0",
         "sabre/xml": "^2.1",
-        "guzzlehttp/guzzle": "^5.3",
+        "guzzlehttp/guzzle": "^6.5",
         "phpunit/phpunit": "^7.5"
     }
 }