diff --git a/frontend/vite.config.ts b/frontend/vite.config.ts
index 5857bad0..629f5012 100644
--- a/frontend/vite.config.ts
+++ b/frontend/vite.config.ts
@@ -76,6 +76,7 @@ export default defineConfig({
   },
   // Dev server proxies API + WebSocket to the GoChat Go backend
   server: {
+    host: '0.0.0.0',
     port: 3036,
     proxy: {
       '/api': {