diff --git a/package.json b/package.json
index 091568510..70f6cdda3 100644
--- a/package.json
+++ b/package.json
@@ -73,7 +73,7 @@
     "sinon-chai": "^3.1.0",
     "smash": "0.0",
     "svg-sprite": "1.4.0",
-    "uglify-js": "~3.3.25",
+    "uglify-js": "~3.4.0",
     "xml2js": "^0.4.17",
     "xmlbuilder": "^10.0.0"
   },