diff --git a/package.json b/package.json
index a13674a497..a255a711d8 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,7 @@
   ],
   "dependencies": {
     "async": "2.4.1",
-    "closure-util": "1.20.0",
+    "closure-util": "1.21.0",
     "derequire": "2.0.6",
     "fs-extra": "3.0.1",
     "glob": "7.1.1",