diff --git a/package.json b/package.json
index 22b5e1a..f8ae9dc 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
     "csslint": "1.0.x",
     "babel-eslint": "~10.1.0",
     "eslint": "~6.8.0",
-    "grunt": "1.4.1",
+    "grunt": "1.5.3",
     "grunt-postcss": "~0.9.0",
     "grunt-contrib-clean": "~2.0.0",
     "grunt-contrib-connect": "~2.1.0",