Use https:// URLs in the HTML templates.
diff --git a/Doc/tools/templates/indexsidebar.html b/Doc/tools/templates/indexsidebar.html
index 5c4c75d..4e10d69 100644
--- a/Doc/tools/templates/indexsidebar.html
+++ b/Doc/tools/templates/indexsidebar.html
@@ -2,16 +2,16 @@
 <p><a href="{{ pathto('download') }}">Download these documents</a></p>
 <h3>Docs for other versions</h3>
 <ul>
-  <li><a href="http://docs.python.org/3.4/">Python 3.4 (stable)</a></li>
-  <li><a href="http://docs.python.org/3.5/">Python 3.5 (in development)</a></li>
-  <li><a href="http://www.python.org/doc/versions/">Old versions</a></li>
+  <li><a href="https://docs.python.org/3.4/">Python 3.4 (stable)</a></li>
+  <li><a href="https://docs.python.org/3.5/">Python 3.5 (in development)</a></li>
+  <li><a href="https://www.python.org/doc/versions/">Old versions</a></li>
 </ul>
 
 <h3>Other resources</h3>
 <ul>
   {# XXX: many of these should probably be merged in the main docs #}
-  <li><a href="http://www.python.org/dev/peps/">PEP Index</a></li>
-  <li><a href="http://wiki.python.org/moin/BeginnersGuide">Beginner's Guide</a></li>
-  <li><a href="http://wiki.python.org/moin/PythonBooks">Book List</a></li>
-  <li><a href="http://www.python.org/doc/av/">Audio/Visual Talks</a></li>
+  <li><a href="https://www.python.org/dev/peps/">PEP Index</a></li>
+  <li><a href="https://wiki.python.org/moin/BeginnersGuide">Beginner's Guide</a></li>
+  <li><a href="https://wiki.python.org/moin/PythonBooks">Book List</a></li>
+  <li><a href="https://www.python.org/doc/av/">Audio/Visual Talks</a></li>
 </ul>