diff --git a/packages/@vue/cli-service/package.json b/packages/@vue/cli-service/package.json
index 0a47bdb26d..169cc3022b 100644
--- a/packages/@vue/cli-service/package.json
+++ b/packages/@vue/cli-service/package.json
@@ -33,7 +33,7 @@
     "chalk": "^2.4.1",
     "clipboardy": "^1.2.3",
     "cliui": "^4.1.0",
-    "copy-webpack-plugin": "^4.5.1",
+    "copy-webpack-plugin": "^5.0.0",
     "css-loader": "^0.28.11",
     "debug": "^3.1.0",
     "escape-string-regexp": "^1.0.5",
@@ -60,7 +60,7 @@
     "source-map-url": "^0.4.0",
     "string.prototype.padend": "^3.0.0",
     "thread-loader": "^1.1.5",
-    "uglifyjs-webpack-plugin": "^1.2.5",
+    "uglifyjs-webpack-plugin": "^2.0.0",
     "url-loader": "^1.0.1",
     "vue-loader": "^15.2.0",
     "vue-template-compiler": "^2.5.16",