-tox
-Sphinx
-doc8
-docutils
-setuptools
-six
-sphinx_rtd_theme>=0.4.3
-sphinxcontrib-blockdiag
-sphinxcontrib-needs>=0.2.3
-sphinxcontrib-nwdiag
-sphinxcontrib-seqdiag
+sphinx>=4.2.0 # BSD
+sphinx-rtd-theme>=1.0.0 # MIT
+sphinxcontrib-blockdiag # BSD
+sphinxcontrib-seqdiag # BSD
sphinxcontrib-swaggerdoc
-sphinxcontrib-plantuml
-sphinx_bootstrap_theme
-lfdocs-conf
+sphinxcontrib-spelling