diff --git a/packages/@vue/cli-service/package.json b/packages/@vue/cli-service/package.json
index 0a47bdb26d..c9bcdd3fe6 100644
--- a/packages/@vue/cli-service/package.json
+++ b/packages/@vue/cli-service/package.json
@@ -59,7 +59,7 @@
     "slash": "^2.0.0",
     "source-map-url": "^0.4.0",
     "string.prototype.padend": "^3.0.0",
-    "thread-loader": "^1.1.5",
+    "thread-loader": "^2.1.1",
     "uglifyjs-webpack-plugin": "^1.2.5",
     "url-loader": "^1.0.1",
     "vue-loader": "^15.2.0",
@@ -67,7 +67,7 @@
     "webpack": "^4.8.2",
     "webpack-bundle-analyzer": "^2.13.1",
     "webpack-chain": "^4.8.0",
-    "webpack-dev-server": "^3.1.4",
+    "webpack-dev-server": "^4.9.0",
     "webpack-merge": "^4.1.2",
     "yorkie": "^1.0.3"
   },