diff --git a/frontend/vite.config.js b/frontend/vite.config.js
index 2cec03f..5d5ed63 100644
--- a/frontend/vite.config.js
+++ b/frontend/vite.config.js
@@ -3,6 +3,22 @@ import react from '@vitejs/plugin-react';
 // https://vitejs.dev/config/
 export default defineConfig({
     plugins: [react()],
+    optimizeDeps: {
+        // Pre-bundle startup locale modules before Wails starts proxying the WebView.
+        include: [
+            'antd/locale/de_DE',
+            'antd/locale/en_US',
+            'antd/locale/ja_JP',
+            'antd/locale/ru_RU',
+            'antd/locale/zh_CN',
+            'antd/locale/zh_TW',
+            'dayjs/locale/de',
+            'dayjs/locale/ja',
+            'dayjs/locale/ru',
+            'dayjs/locale/zh-cn',
+            'dayjs/locale/zh-tw',
+        ],
+    },
     server: {
         host: '127.0.0.1',
         port: 5173,
diff --git a/frontend/vite.config.ts b/frontend/vite.config.ts
index 3c783cc..db1c836 100644
--- a/frontend/vite.config.ts
+++ b/frontend/vite.config.ts
@@ -4,6 +4,22 @@ import react from '@vitejs/plugin-react'
 // https://vitejs.dev/config/
 export default defineConfig({
   plugins: [react()],
+  optimizeDeps: {
+    // Pre-bundle startup locale modules before Wails starts proxying the WebView.
+    include: [
+      'antd/locale/de_DE',
+      'antd/locale/en_US',
+      'antd/locale/ja_JP',
+      'antd/locale/ru_RU',
+      'antd/locale/zh_CN',
+      'antd/locale/zh_TW',
+      'dayjs/locale/de',
+      'dayjs/locale/ja',
+      'dayjs/locale/ru',
+      'dayjs/locale/zh-cn',
+      'dayjs/locale/zh-tw',
+    ],
+  },
   server: {
     host: '127.0.0.1',
     port: 5173,