diff --git a/backend/bot.js b/backend/bot.js
index b3de4f2..8c58da1 100644
--- a/backend/bot.js
+++ b/backend/bot.js
@@ -21,7 +21,7 @@ const streamifier = require('streamifier');
 const app             = express();
 const HTTP_PORT       = 3001;           // порт для BACKEND API
 const BOT_TOKEN       = '7801636590:AAFphqOK0Dqta7v9VCLkTPGYC1OujNIFgXA';  // ← замените на свой токен
-const WEBAPP_BASE_URL = 'https://d472-46-246-24-76.ngrok-free.app/'; // ← например: https://xyz123.ngrok.io
+const WEBAPP_BASE_URL = 'https://dosoap.duckdns.org/'; // ← например: https://xyz123.ngrok.io
 
 // 1) Запускаем бота (polling)
 const bot = new TelegramBot(BOT_TOKEN, { polling: true });
diff --git a/frontend/components/SoapCalculator.tsx b/frontend/components/SoapCalculator.tsx
index eccabf2..1fd34c4 100644
--- a/frontend/components/SoapCalculator.tsx
+++ b/frontend/components/SoapCalculator.tsx
@@ -151,7 +151,7 @@ export default function SoapCalculator() {
     try {
       // Замените URL на публичный адрес вашего backend (Express/ngrok/другой хостинг)
       // Например: 'https://abcd1234.ngrok.io/api/submit'
-      const res = await fetch('http://91.122.47.159:3001/api/submit', {
+      const res = await fetch('https://api-dosoap.duckdns.org/api/submit', {
         method: 'POST',
         body: formData,
       });