diff --git a/build/integration/composer.json b/build/integration/composer.json
index 6723c54a05..d24df4f335 100644
--- a/build/integration/composer.json
+++ b/build/integration/composer.json
@@ -2,7 +2,7 @@
   "require-dev": {
     "phpunit/phpunit": "~6.5",
     "behat/behat": "~3.5.0",
-    "guzzlehttp/guzzle": "6.3.3",
+    "guzzlehttp/guzzle": "6.5.2",
     "jarnaiz/behat-junit-formatter": "^1.3",
     "sabre/dav": "3.2.3"
   }