diff --git a/example/pdfh5-vue/package.json b/example/pdfh5-vue/package.json
index a4acd5e..ed4216b 100644
--- a/example/pdfh5-vue/package.json
+++ b/example/pdfh5-vue/package.json
@@ -47,7 +47,7 @@
     "vue-template-compiler": "^2.5.2",
     "webpack": "^3.6.0",
     "webpack-bundle-analyzer": "^3.6.0",
-    "webpack-dev-server": "^2.9.1",
+    "webpack-dev-server": "^3.9.0",
     "webpack-merge": "^4.1.0"
   },
   "engines": {