diff --git a/nginx.conf b/nginx.conf
index 04bdfd3..41a9116 100644
--- a/nginx.conf
+++ b/nginx.conf
@@ -18,6 +18,9 @@ http {
         listen       80;
         server_name  localhost;
 
+        # Docker DNS resolver
+        resolver 127.0.0.11 valid=30s;
+
         # Health proxy endpoint - forwards to internal python service
         location /healthcheck {
             proxy_pass http://health-proxy:8081$request_uri;