diff --git a/composer.json b/composer.json
index 61011ba..8cd5cfb 100644
--- a/composer.json
+++ b/composer.json
@@ -23,7 +23,7 @@
   },
   "require": {
     "php": "^7.1 || ^8.0",
-    "guzzlehttp/guzzle": "^7.0",
+    "guzzlehttp/guzzle": "^6.5.8 || ^7.4.5",
     "yogarine/doctrine-annotation-autoload": "^0.3.0",
     "gammadia/jms-serializer-1.x": "^1.14",
     "simple-bus/jms-serializer-bridge": "^1.0"