diff --git a/docs/_templates/sidebarintro.html b/docs/_templates/sidebarintro.html
index 8e46fbc9..9ed32a0c 100644
--- a/docs/_templates/sidebarintro.html
+++ b/docs/_templates/sidebarintro.html
@@ -40,6 +40,7 @@
 
 <h3>Useful Links</h3>
 <ul>
+  <li><a href="http://certifi.io/en/latest/">Certifi Project — Recommended CA Bundle</a></li>
   <li><a href="http://github.com/kennethreitz/requests">Requests @ GitHub</a></li>
   <li><a href="http://pypi.python.org/pypi/requests">Requests @ PyPI</a></li>
   <li><a href="http://github.com/kennethreitz/requests/issues">Issue Tracker</a></li>