diff --git a/composer.json b/composer.json
index 2725e5e..c06216c 100644
--- a/composer.json
+++ b/composer.json
@@ -21,7 +21,7 @@
 		"doctrine/cache": "^1.8.0",
 		"nette/di": "^3.0",
 		"nette/caching": "^3.0",
-		"nette/utils": "~v3.2.6"
+		"nette/utils": "~v3.2.6 || ^4.0"
 	},
 	"require-dev": {
 		"doctrine/orm": "^2.6.3",