diff --git a/web_app/static/index.html b/web_app/static/index.html
index 84d7010..e562429 100644
--- a/web_app/static/index.html
+++ b/web_app/static/index.html
@@ -414,7 +414,7 @@
     </template>
 
     <!-- JS -->
-    <script src="js/app.js?v=2"></script>
+    <script src="js/app.js?v=3"></script>
 </body>
 
 </html>
\ No newline at end of file
diff --git a/web_app/static/js/app.js b/web_app/static/js/app.js
index 612aa88..fb239e6 100644
--- a/web_app/static/js/app.js
+++ b/web_app/static/js/app.js
@@ -218,7 +218,8 @@ function initApp() {
         try { tg.setHeaderColor('#0f172a'); } catch (e) { }
 
         currentState.user = tg.initDataUnsafe?.user;
-        if (tg.initDataUnsafe?.user?.language_code === 'ru') {
+        const userLang = (tg.initDataUnsafe?.user?.language_code || 'en').toLowerCase();
+        if (userLang === 'ru' || userLang.startsWith('ru')) {
             currentState.lang = 'ru';
         }