Issue #26736: Used HTTPS for external links in the documentation if possible.
diff --git a/Doc/faq/extending.rst b/Doc/faq/extending.rst
index 83b68ba..e78da55 100644
--- a/Doc/faq/extending.rst
+++ b/Doc/faq/extending.rst
@@ -45,7 +45,7 @@
x86-compatible processor.
`Cython <http://cython.org>`_ and its relative `Pyrex
-<http://www.cosc.canterbury.ac.nz/greg.ewing/python/Pyrex/>`_ are compilers
+<https://www.cosc.canterbury.ac.nz/greg.ewing/python/Pyrex/>`_ are compilers
that accept a slightly modified form of Python and generate the corresponding
C code. Pyrex makes it possible to write an extension without having to learn
Python's C API.