diff --git a/main.js b/main.js
index 425fa15..ebbd7ed 100644
--- a/main.js
+++ b/main.js
@@ -103,7 +103,7 @@ cmdApp.get('/__tauri_cmd/:cmd', (req, res) => {
   sendToTauri('tauri-cmd', { cmd: req.params.cmd, url: req.query.url, window: req.query.window });
   res.sendStatus(200);
 });
-cmdApp.listen(4892, () => debugLog("[CMD-SERVER] Dedicated command server listening on port 4892"));
+cmdApp.listen(4892, '127.0.0.1', () => debugLog("[CMD-SERVER] Dedicated command server listening on port 4892"));
 
 process.stdin.resume();
 process.stdin.on('end', () => {
@@ -350,8 +350,8 @@ async function start() {
         tempApp.get('/update/info', (req, res) => {
           res.json({ available: true, current: localVersion, latest: release.version });
         });
-        const handleYes = (req, res) => { userDecision = true; res.sendStatus(200); };
-        const handleNo = (req, res) => { userDecision = false; res.sendStatus(200); };
+        const handleYes = (req, res) => { debugLog("tempApp received YES"); userDecision = true; res.sendStatus(200); };
+        const handleNo = (req, res) => { debugLog("tempApp received NO"); userDecision = false; res.sendStatus(200); };
 
         tempApp.all('/update/yes', handleYes);
         tempApp.all('/update/install', handleYes);
@@ -365,7 +365,7 @@ async function start() {
         });
 
         const tempServer = await new Promise((resolve) => {
-          const s = tempApp.listen(4891, () => resolve(s));
+          const s = tempApp.listen(4891, '127.0.0.1', () => resolve(s));
           s.on('error', (err) => {
             debugLog(`Update server bind error: ${err.message}`);
             resolve(null);
@@ -480,10 +480,10 @@ async function start() {
     const FRONTEND_PORT = 4890;
     expressApp.use('/build', express.static(path.join(__dirname, 'build')));
 
-    expressServer = expressApp.listen(FRONTEND_PORT, () => {
+    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 f46a891..12a3862 100644
--- a/src-tauri/src/main.rs
+++ b/src-tauri/src/main.rs
@@ -448,7 +448,7 @@ const LINK_HANDLER_SCRIPT: &str =
             logoBtn.onclick = (e) => {
                 e.preventDefault();
                 e.stopPropagation();
-                window.location.href = 'http://localhost:4890';
+                window.location.href = 'http://127.0.0.1:4890';
             };
         }