-r requirements.txt
flake8==3.5.0
pytest==3.3.0
pytest-mock==1.6.3
pytest-cov==2.5.1
pytest-xdist==1.20.1
coveralls==1.2.0
freezegun==0.3.9
requests-mock==1.3.0
# optional requirements for jsonschema
strict-rfc3339==0.7
rfc3987==1.3.7

-r requirements.txt
flake8==3.5.0
pytest==3.3.0
pytest-mock==1.6.3
pytest-cov==2.5.1
pytest-xdist==1.20.1
coveralls==1.2.0
freezegun==0.3.9
requests-mock==1.4.0
# optional requirements for jsonschema
strict-rfc3339==0.7
rfc3987==1.3.7

Update requests-mock from 1.3.0 to 1.4.0
Update requests-mock from 1.3.0 to 1.4.0