diff --git a/package.json b/package.json
index d90491d..b70b5d2 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
 	},
 	"devDependencies": {
 		"eslint-config-wikimedia": "0.15.0",
-		"grunt": "1.3.0",
+		"grunt": "1.5.3",
 		"grunt-banana-checker": "0.8.1",
 		"grunt-eslint": "22.0.0"
 	}