diff --git a/composer.json b/composer.json
index a90f6bd..d7768b6 100644
--- a/composer.json
+++ b/composer.json
@@ -44,7 +44,7 @@
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.64",
-        "guzzlehttp/guzzle": "^7.8",
+        "guzzlehttp/guzzle": "^7.8 || ^8.0",
         "phpstan/phpstan": "^2.1",
         "phpstan/phpstan-phpunit": "^2.0",
         "phpstan/phpstan-strict-rules": "^2.0",