sphinx!=1.6.6,!=1.6.7,>=1.6.2 # BSD
sphinxcontrib-httpdomain>=1.3.0 # BSD
sphinxcontrib-blockdiag>=1.5.4 # BSD
reno>=2.5.0 # Apache-2.0
os-api-ref>=1.4.0 # Apache-2.0
openstackdocstheme>=1.18.1 # Apache-2.0