diff --git a/package.json b/package.json
index 06330fc..6d176ae 100644
--- a/package.json
+++ b/package.json
@@ -61,7 +61,7 @@
     "rollup": "^0.64.0",
     "eslint": "^5.0.0",
     "rollup-plugin-babel": "^3.0.4",
-    "rollup-plugin-uglify": "^3.0.0",
+    "rollup-plugin-uglify": "^4.0.0",
     "rollup-plugin-vue": "4.3.1",
     "vue-template-compiler": "^2.5.16"
   }