diff --git a/www/conservancy/templates/sponsors.html b/www/conservancy/templates/sponsors.html
index 2e5bf52ad6049e160e157aead0199287593df86b..dd3d63ddd499083f29abcb3e3800a87cb5602403 100644
--- a/www/conservancy/templates/sponsors.html
+++ b/www/conservancy/templates/sponsors.html
@@ -24,6 +24,7 @@ any of its sponsors.</p>
 
 <!-- logos should be 250x250 maximum. -->
 <ul id="sponsor">
+<li><a rel="nofollow" href="https://www.ampr.org"><img src="/img/sponsors/ardc.svg" width="250" alt="Amateur Radio Digital Communications" /></a></li>
 <li><a rel="nofollow" href="https://google.com"><img src="/img/sponsors/google.png" height="76" width="238" alt="Google" /></a></li>
 <li><a rel="nofollow" href="https://joshtriplett.org"><img src="/img/sponsors/2020_Josh-Triplett.jpg" height="167" width="250" alt="Josh Triplett" /></a></li>
 <li><a rel="nofollow" href="https://code.wildebeest.org/">Mark Wielaard</a></li>