diff --git a/composer.json b/composer.json
index 01708ef..c0d3e6e 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,7 @@
     },
     "require-dev": {
         "codedungeon/phpunit-result-printer": "^0.32",
-        "guzzlehttp/guzzle": "^7.15",
+        "guzzlehttp/guzzle": "^8.0",
         "ilexn/keep-a-change-log": "^2.0.1",
         "infection/infection": "^0.27.11",
         "phpbench/phpbench": "^1.2.15",