diff --git a/composer.json b/composer.json
index d2b1e1c..e773cf2 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
 	},
 	"require": {
 		"php": "^7.2",
-		"guzzlehttp/guzzle": "^6.3",
+		"guzzlehttp/guzzle": "^6.3 || ^7.0",
 		"nette/di": "^2.4.10 || ^3.0"
 	},
 	"require-dev": {