-r ../requirements.txt
sphinx==1.8.5
sphinx_rtd_theme==0.4.3
sphinxcontrib-svg2pdfconverter

-r ../requirements.txt
sphinx==2.0.0
sphinx_rtd_theme==0.4.3
sphinxcontrib-svg2pdfconverter

Update sphinx from 1.8.5 to 2.0.0
Update sphinx from 1.8.5 to 2.0.0