-r requirements.txt
pytest==3.0.7
pytest-instafail==0.3.0
pytest-timeout==1.2.0
pytest-xdist==1.16.0
requests==2.14.2
selenium==3.4.2
websocket-client==0.40.0

-r requirements.txt
pytest==3.1.0
pytest-instafail==0.3.0
pytest-timeout==1.2.0
pytest-xdist==1.16.0
requests==2.14.2
selenium==3.4.2
websocket-client==0.40.0

Update pytest from 3.0.7 to 3.1.0
Update pytest from 3.0.7 to 3.1.0