diff --git a/main.js b/main.js
index 40883b7..9582d45 100644
--- a/main.js
+++ b/main.js
@@ -410,7 +410,7 @@ async function start() {
     expressServer = expressApp.listen(FRONTEND_PORT, '127.0.0.1', () => {
       sendToTauri('status', { message: 'All backend services running and healthy.' });
       debugLog("Frontend Express running on 4890. Sending READY to Tauri.");
-      sendToTauri('ready', { url: `http://localhost:${FRONTEND_PORT}` });
+      sendToTauri('ready', { url: `http://127.0.0.1:${FRONTEND_PORT}` });
     });
 
   } catch (error) {
diff --git a/src-tauri/src/main.rs b/src-tauri/src/main.rs
index 9bd23a4..55ddb5b 100644
--- a/src-tauri/src/main.rs
+++ b/src-tauri/src/main.rs
@@ -503,9 +503,9 @@ fn open_new_window(app: tauri::AppHandle, url: String) -> Result<(), String> {
     let final_url = if url.starts_with("http") || url.starts_with("tauri://") {
         url.clone()
     } else if url.starts_with('/') {
-        format!("http://localhost:4890{}", url)
+        format!("http://127.0.0.1:4890{}", url)
     } else {
-        format!("http://localhost:4890/{}", url)
+        format!("http://127.0.0.1:4890/{}", url)
     };
 
     if let Some(window) = app.get_webview_window("main") {