diff --git a/package.json b/package.json
index 6801a5e..4569c32 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,7 @@
     "scratch-vm": "0.2.0-prerelease.20181024204838",
     "tap": "^11.0.0",
     "travis-after-all": "^1.4.4",
-    "uglifyjs-webpack-plugin": "^1.2.5",
+    "uglifyjs-webpack-plugin": "^2.1.0",
     "webpack": "^4.8.0",
     "webpack-cli": "^3.1.0",
     "webpack-dev-server": "^3.1.4"