diff --git a/2019/12/webpack.md b/2019/12/webpack.md
index f128c79..1d73417 100644
--- a/2019/12/webpack.md
+++ b/2019/12/webpack.md
@@ -114,4 +114,6 @@ moudle.export={
 
 ```
 
-3.更改 
\ No newline at end of file
+3.更改 package.json
+script ->dev 改成
+ "dev": "webpack-dev-server --config webpack.dev.js --open"
\ No newline at end of file