diff --git a/_src/_includes/form-newsletter.html b/_src/_includes/form-newsletter.html
index 82fdbbc..8bcebdc 100644
--- a/_src/_includes/form-newsletter.html
+++ b/_src/_includes/form-newsletter.html
@@ -1,6 +1,6 @@
 <form id="newsletter"
     class="form--newsletter js-parsley"
-    action="//ascribe.us9.list-manage.com/subscribe/post?u=56f2d3da26a7d407177d3fba3&id=0a99a9481e"
+    action="https://bigchaindb.us9.list-manage.com/subscribe/post?u=56f2d3da26a7d407177d3fba3&amp;id=0a99a9481e"
     method="post">
 
     <div class="form-group has-feedback">