diff --git a/nginx.conf b/nginx.conf
index 108da622..0c46c8d0 100644
--- a/nginx.conf
+++ b/nginx.conf
@@ -17,7 +17,7 @@ server {
 
     # API requests → backend (Authorization header must be explicit or it gets stripped)
     location /api/ {
-        proxy_pass http://localhost:5000;
+        proxy_pass http://127.0.0.1:5000;
         proxy_http_version 1.1;
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;
@@ -27,7 +27,7 @@ server {
 
     # Socket.IO → backend (WebSocket upgrade)
     location /socket.io/ {
-        proxy_pass http://localhost:5000;
+        proxy_pass http://127.0.0.1:5000;
         proxy_http_version 1.1;
         proxy_set_header Upgrade $http_upgrade;
         proxy_set_header Connection "upgrade";
@@ -37,7 +37,7 @@ server {
 
     # Everything else → Vite dev server
     location / {
-        proxy_pass http://localhost:3000;
+        proxy_pass http://127.0.0.1:3000;
         proxy_http_version 1.1;
         proxy_set_header Upgrade $http_upgrade;
         proxy_set_header Connection "upgrade";
@@ -57,7 +57,7 @@ server {
     client_max_body_size 50m;
 
     location /api/twilio/ {
-        proxy_pass http://localhost:5000;
+        proxy_pass http://127.0.0.1:5000;
         proxy_http_version 1.1;
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;