cryptography>=1.4
flake8>=3.0
pip>=8.1.2
pycodestyle>=2.0.0
pyflakes>=1.2.3,<1.3
pylint>=1.6.4
pytest>=2.9.2
PyYAML>=3.11
six>=1.10.0
sphinx>=1.4.6
tox>=2.3.1
twine>=1.8.1
yapf>=0.12
