Use https:// URLs when referring to python.org hosts.
diff --git a/Doc/library/unittest.rst b/Doc/library/unittest.rst
index 32cf94f..a4bed7a 100644
--- a/Doc/library/unittest.rst
+++ b/Doc/library/unittest.rst
@@ -55,7 +55,7 @@
Third-party unittest frameworks with a lighter-weight syntax for writing
tests. For example, ``assert func(10) == 42``.
- `The Python Testing Tools Taxonomy <http://wiki.python.org/moin/PythonTestingToolsTaxonomy>`_
+ `The Python Testing Tools Taxonomy <https://wiki.python.org/moin/PythonTestingToolsTaxonomy>`_
An extensive list of Python testing tools including functional testing
frameworks and mock object libraries.