diff --git a/src/server/middleware.js b/src/server/middleware.js
index bc9a90a9da38..7efc6634113c 100644
--- a/src/server/middleware.js
+++ b/src/server/middleware.js
@@ -25,6 +25,7 @@ export default function (configDir) {
     noInfo: true,
     publicPath: config.output.publicPath,
     watchOptions: config.watchOptions || {},
+    ...config.devServer,
   };
 
   const router = new Router();