diff --git a/vite.config.ts b/vite.config.ts
index 262383c..32552f5 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -11,7 +11,7 @@ function pagesRewritePlugin(): Plugin {
       server.middlewares.use((req, res, next) => {
         const url = req.url?.split('?')[0] || '';
 
-        const langMatch = url.match(/^\/(en|de|zh)(\/.*)?$/);
+        const langMatch = url.match(/^\/(en|de|zh|vi)(\/.*)?$/);
         if (langMatch) {
           const lang = langMatch[1];
           const restOfPath = langMatch[2] || '/';