diff --git a/sites/main-site/src/pages/join.astro b/sites/main-site/src/pages/join.astro
index bd964f6e33..e4ed57dc7c 100644
--- a/sites/main-site/src/pages/join.astro
+++ b/sites/main-site/src/pages/join.astro
@@ -145,6 +145,10 @@ const headings = [
             ><i class="fab fa-slack"></i> Get an invite to nf-core Slack</a
         >
     </p>
+    <div class="alert alert-secondary text-center small">
+        If the invite link doesn't work, please email us at
+        <a href="mailto:core@nf-co.re">core@nf-co.re</a> so that we can update it. Thanks!
+    </div>
 
     <h1 id="github" class="mt-5">
         <span class="join-pull-img bg-body"><Icon name="fa:github" class="text-body" size="120px" /></span>