flake8>=3.2,<3.2.99
pep8>=1.7,<1.7.99
pyflakes>=1.3,<1.3.99

flake8>=3.2,<3.2.99
pep8>=1.7,<1.7.99
pyflakes>=1.5,<1.5.99

Update pyflakes to the latest version 1.5
Update pyflakes to the latest version 1.5