diff --git a/_includes/layouts/base.njk b/_includes/layouts/base.njk
index d2bb57b..312faa7 100644
--- a/_includes/layouts/base.njk
+++ b/_includes/layouts/base.njk
@@ -52,6 +52,7 @@
   <link rel="authorization_endpoint" href="{{ site.url }}/auth">
   <link rel="token_endpoint" href="{{ site.url }}/auth/token">
   <link rel="micropub" href="{{ site.url }}/micropub">
+  <link rel="microsub" href="{{ site.url }}/microsub">
   <link rel="webmention" href="https://webmention.io/{{ site.webmentions.domain }}/webmention">
   <link rel="pingback" href="https://webmention.io/{{ site.webmentions.domain }}/xmlrpc">