diff --git a/salt/nginx/etc/nginx.conf b/salt/nginx/etc/nginx.conf
index 0c98b7b28..8150265f5 100644
--- a/salt/nginx/etc/nginx.conf
+++ b/salt/nginx/etc/nginx.conf
@@ -225,6 +225,7 @@ http {
 			limit_req             zone=auth_throttle burst={{ NGINXMERGED.config.throttle_login_burst }} nodelay;
 			limit_req_status      429;
 			proxy_pass            http://{{ GLOBALS.manager }}:4433;
+			proxy_set_header      Connection "Close";
 			proxy_read_timeout    90;
 			proxy_connect_timeout 90;
 			proxy_set_header      Host $host;
@@ -237,6 +238,7 @@ http {
 		location ~ ^/auth/.*?(whoami|logout|settings|errors|webauthn.js) {
 			rewrite               /auth/(.*) /$1 break;
 			proxy_pass            http://{{ GLOBALS.manager }}:4433;
+			proxy_set_header      Connection "Close";
 			proxy_read_timeout    90;
 			proxy_connect_timeout 90;
 			proxy_set_header      Host $host;