docs/requirements-docs.txt

   1 six
   2 sphinx>=4.2.0  # BSD
   3 sphinx-rtd-theme>=1.0.0  # MIT
   4 sphinxcontrib-blockdiag  # BSD
   5 sphinxcontrib-seqdiag # BSD
   6 sphinxcontrib-swaggerdoc
   7 sphinxcontrib-spelling
   8 sphinxcontrib-plantuml