-r requirements.txt
isort==4.3.4
pytest==3.7.4
pytest-env==0.6.2
pytest-mock==1.10.0
pytest-cov==2.6.0
pytest-xdist==1.23.0
coveralls==1.5.0
httpretty==0.9.5
beautifulsoup4==4.6.3
freezegun==0.3.10
flake8==3.5.0
flake8-print==3.1.0

-r requirements.txt
isort==4.3.4
pytest==3.8.0
pytest-env==0.6.2
pytest-mock==1.10.0
pytest-cov==2.6.0
pytest-xdist==1.23.0
coveralls==1.5.0
httpretty==0.9.5
beautifulsoup4==4.6.3
freezegun==0.3.10
flake8==3.5.0
flake8-print==3.1.0

Update pytest from 3.7.4 to 3.8.0
Update pytest from 3.7.4 to 3.8.0