diff --git a/lib/builder/webpack/vue-loader.config.js b/lib/builder/webpack/vue-loader.config.js
index 659eded04b..385fa49425 100644
--- a/lib/builder/webpack/vue-loader.config.js
+++ b/lib/builder/webpack/vue-loader.config.js
@@ -20,6 +20,10 @@ export default function ({ isClient }) {
       'stylus': styleLoader.call(this, 'stylus', 'stylus-loader'),
       'styl': styleLoader.call(this, 'stylus', 'stylus-loader')
     },
+    template: {
+      // for pug, see https://github.com/vuejs/vue-loader/issues/55
+      doctype: 'html'
+    },
     preserveWhitespace: false,
     extractCSS: extractStyles.call(this)
   }