diff --git a/apps/admin/nginx.conf b/apps/admin/nginx.conf
index 871a3f8..fa327b9 100644
--- a/apps/admin/nginx.conf
+++ b/apps/admin/nginx.conf
@@ -3,8 +3,14 @@ server {
   root /usr/share/nginx/html;
   index index.html;
 
+  # Résolveur DNS interne Docker : force nginx à re-résoudre "api" à chaque
+  # requête au lieu de mettre l'IP en cache au démarrage (sinon un redeploy
+  # du service api laisse nginx pointer vers un conteneur mort -> 502/404).
+  resolver 127.0.0.11 valid=10s;
+
   location /admin/api/ {
-    proxy_pass http://api:3000;
+    set $upstream_api http://api:3000;
+    proxy_pass $upstream_api;
     proxy_set_header Host $host;
     proxy_set_header X-Real-IP $remote_addr;
     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
@@ -12,7 +18,8 @@ server {
   }
 
   location /admin/auth/ {
-    proxy_pass http://api:3000;
+    set $upstream_api http://api:3000;
+    proxy_pass $upstream_api;
     proxy_set_header Host $host;
     proxy_set_header X-Real-IP $remote_addr;
     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;