diff --git a/demo/package.json b/demo/package.json
index 6c50e9e..261b8d6 100644
--- a/demo/package.json
+++ b/demo/package.json
@@ -27,6 +27,6 @@
     "vue-loader": "^11.1.4",
     "vue-template-compiler": "^2.2.1",
     "webpack": "^2.2.0",
-    "webpack-dev-server": "^2.2.0"
+    "webpack-dev-server": "^3.10.3"
   }
 }