diff --git a/nginx/nginx.conf b/nginx/nginx.conf
index c05c27fe..471e2daf 100644
--- a/nginx/nginx.conf
+++ b/nginx/nginx.conf
@@ -423,6 +423,8 @@ http {
 
         root /srv/mta-sts;
 
+        keepalive_timeout 0;
+
         include snippets/security-headers.conf;
         add_header Cross-Origin-Resource-Policy "same-origin" always;