cpython/Doc/requirements.txt

# Requirements to build the Python documentation
#
# Note that when updating this file, you will likely also have to update
# the Doc/constraints.txt file.

# Sphinx version is pinned so that new versions that introduce new warnings
# won't suddenly cause build failures. Updating the version is fine as long
# as no warnings are raised by doing so.
sphinx~=8.0.0

blurb

sphinxext-opengraph~=0.9.0
sphinx-notfound-page~=1.0.0

# The theme used by the documentation is stored separately, so we need
# to install that as well.
python-docs-theme>=2023.3.1,!=2023.7

-c constraints.txt