diff --git a/static/articles/grapheneos-servers.html b/static/articles/grapheneos-servers.html
index 5e604df1..2927582c 100644
--- a/static/articles/grapheneos-servers.html
+++ b/static/articles/grapheneos-servers.html
@@ -310,6 +310,7 @@
                 <ul>
                     <li>22 ssh - no passwords, SSHFP</li>
                     <li>80 http - no content, returns 204 response code for /generate_204 and /gen_204, HTTPS redirect for other URLs</li>
+                    <li>123 ntp - NTP for xtra-daemon via time.grapheneos.org (not for other purposes)</li>
                     <li>443 https - no content, returns 204 response code for /generate_204 and /gen_204, DANE TLSA</li>
                 </ul>
             </section>