breathe>=4.4
docutils>=0.13
Pygments>=2.2
pyparsing>=2.1
Sphinx>=1.8.5
sphinxcontrib-bibtex>=0.3.3
sphinxcontrib-doxylink>=1.3
sphinx_rtd_theme>=0.3
requests[security]

breathe>=4.4
docutils>=0.13
Pygments>=2.2
pyparsing>=2.1
Sphinx>=1.8.5
sphinxcontrib-bibtex>=0.3.3,<2.0.0
sphinxcontrib-doxylink>=1.3
sphinx_rtd_theme>=0.3
requests[security]

Fix issue with readthedocs builds
Fix issue with readthedocs builds

The module `sphinxcontrib-bibtex` got updated to version 2.0.0, but our setup doesn't work with that yet.