Issue #26736: Used HTTPS for external links in the documentation if possible.
diff --git a/Doc/library/unittest.rst b/Doc/library/unittest.rst
index e076be6..2e260d1 100644
--- a/Doc/library/unittest.rst
+++ b/Doc/library/unittest.rst
@@ -67,7 +67,7 @@
a GUI tool for test discovery and execution. This is intended largely for ease of use
for those new to unit testing. For production environments it is
recommended that tests be driven by a continuous integration system such as
- `Buildbot <http://buildbot.net/>`_, `Jenkins <http://jenkins-ci.org/>`_
+ `Buildbot <https://buildbot.net/>`_, `Jenkins <https://jenkins.io/>`_
or `Hudson <http://hudson-ci.org/>`_.