-r requirements.txt
pytest==3.2.1
pytest-instafail==0.3.0
pytest-timeout==1.2.0
pytest-xdist==1.19.1
requests==2.18.4
selenium==3.4.3
websocket-client==0.44.0

-r requirements.txt
pytest==3.2.1
pytest-instafail==0.3.0
pytest-timeout==1.2.0
pytest-xdist==1.20.0
requests==2.18.4
selenium==3.4.3
websocket-client==0.44.0

Update pytest-xdist from 1.19.1 to 1.20.0
Update pytest-xdist from 1.19.1 to 1.20.0