diff --git a/src/assets/jquery-ui-1.12.1.custom/package.json b/src/assets/jquery-ui-1.12.1.custom/package.json
index e3c846e..f7dd2a0 100644
--- a/src/assets/jquery-ui-1.12.1.custom/package.json
+++ b/src/assets/jquery-ui-1.12.1.custom/package.json
@@ -53,7 +53,7 @@
 	"dependencies": {},
 	"devDependencies": {
 		"commitplease": "2.3.0",
-		"grunt": "0.4.5",
+		"grunt": "1.4.1",
 		"grunt-bowercopy": "1.2.4",
 		"grunt-cli": "0.1.13",
 		"grunt-compare-size": "0.4.0",