diff --git a/static/articles/grapheneos-servers.html b/static/articles/grapheneos-servers.html
index 8a877b7b..4749f91d 100644
--- a/static/articles/grapheneos-servers.html
+++ b/static/articles/grapheneos-servers.html
@@ -570,6 +570,7 @@
                     <li>TCP 22 ssh</li>
                     <li>TCP 53 domain</li>
                     <li>UDP 53 domain</li>
+                    <li>TCP 853 domain-s</li>
                 </ul>
             </section>