Use https:// URLs when referring to python.org hosts.
diff --git a/Doc/library/xmllib.rst b/Doc/library/xmllib.rst
index 43cbce9..1e4c776 100644
--- a/Doc/library/xmllib.rst
+++ b/Doc/library/xmllib.rst
@@ -255,11 +255,11 @@
       material on XML, including translations of the specification, are available at
       http://www.w3.org/XML/.
 
-   `Python and XML Processing <http://www.python.org/topics/xml/>`_
+   `Python and XML Processing <https://www.python.org/topics/xml/>`_
       The Python XML Topic Guide provides a great deal of information on using XML
       from Python and links to other sources of information on XML.
 
-   `SIG for XML Processing in Python <http://www.python.org/sigs/xml-sig/>`_
+   `SIG for XML Processing in Python <https://www.python.org/sigs/xml-sig/>`_
       The Python XML Special Interest Group is developing substantial support for
       processing XML from Python.