diff --git a/theme.html b/theme.html
index af8f524f9e..f94c53995d 100644
--- a/theme.html
+++ b/theme.html
@@ -47,6 +47,9 @@
 </head>
 <body tabindex="-1">
 
+<!-- Mastodon link verification: https://docs.joinmastodon.org/user/profile/#Link%20verification -->
+<a rel="me" href="https://en.osm.town/@MapComplete" class="hidden">Mastodon</a>
+
 
 <div class="h-screen" id="maindiv">
     <div id="default-main h-full">
