diff --git a/composer.json b/composer.json
index a8704c1..74078a1 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,7 @@
   ],
   "require": {
     "php": "^7.3 || ^8.0",
-    "guzzlehttp/guzzle": "^7.12.1",
+    "guzzlehttp/guzzle": "^8.0.0",
     "paragonie/constant_time_encoding": "2.8.2",
     "vlucas/phpdotenv": "^5.6.1"
   },