diff --git a/package.json b/package.json
index beeb5744..33c2b422 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
   "devDependencies": {
     "google-closure-compiler": "^20161201.0.0",
     "grunt": "^1.0.1",
-    "grunt-contrib-clean": "^1.0.0",
+    "grunt-contrib-clean": "^2.0.1",
     "grunt-contrib-compress": "^1.3.0",
     "grunt-contrib-copy": "^1.0.0",
     "grunt-contrib-cssmin": "^1.0.2",