-r requirements.txt
pycodestyle==2.3.1
pytest==3.2.1
pytest-mock==1.6.2
pytest-cov==2.5.1
pytest-xdist==1.20.0
coveralls==1.2.0
moto==1.1.1
freezegun==0.3.9
requests-mock==1.3.0
strict-rfc3339==0.7

-r requirements.txt
pycodestyle==2.3.1
pytest==3.2.2
pytest-mock==1.6.2
pytest-cov==2.5.1
pytest-xdist==1.20.0
coveralls==1.2.0
moto==1.1.1
freezegun==0.3.9
requests-mock==1.3.0
strict-rfc3339==0.7

Update pytest from 3.2.1 to 3.2.2
Update pytest from 3.2.1 to 3.2.2