diff --git a/package.json b/package.json
index c6a3722..2aafbe5 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
     },
     "bugs": "https://github.com/meshware/meshware.github.io/issues",
     "devDependencies": {
-        "grunt": "1.5.2",
+        "grunt": "1.5.3",
         "grunt-contrib-less": "3.0.0",
         "grunt-contrib-watch": "1.1.0",
         "grunt-banner": "0.6.0",