diff --git a/package.json b/package.json
index 05c93f50ff..72c0dee09c 100644
--- a/package.json
+++ b/package.json
@@ -76,7 +76,7 @@
     "rollup-plugin-commonjs": "9.1.6",
     "rollup-plugin-node-resolve": "3.4.0",
     "rollup-plugin-sourcemaps": "0.4.2",
-    "rollup-plugin-uglify": "5.0.2",
+    "rollup-plugin-uglify": "6.0.0",
     "sinon": "^6.0.0",
     "typescript": "^3.1.0-dev.20180905",
     "uglifyjs-webpack-plugin": "^1.2.5",