-r requirements.txt
pytest-cov==2.6.1
tox==3.9.0
tox-travis==0.12
codecov==2.0.15
coverage==4.5.3

-r requirements.txt
pytest-cov==2.7.1
tox==3.9.0
tox-travis==0.12
codecov==2.0.15
coverage==4.5.3

Update pytest-cov from 2.6.1 to 2.7.1
Update pytest-cov from 2.6.1 to 2.7.1