diff --git a/composer.json b/composer.json
index 4f67c6d..80ab6ef 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
 	"require": {
 		"php": ">=5.6",
 		"nette/di": "^3.0",
-		"nette/utils": "3.1.6",
+		"nette/utils": "4.0.4",
 		"latte/latte": ">=2.4.0",
 		"kdyby/console": ">=2.6.0",
 		"sergiors/importing": "1.0.1"