attrs >= 17.4.0
hypothesis >= 3.56.9
Pillow >= 5.0.0
pytest >= 3.6.0, < 4.1.0
pytest-xdist >= 1.22.2
pytest-helpers-namespace >= 2017.11.11
pytest-timeout >= 1.3.0
python-xmp-toolkit >= 2.0.1 ; sys_platform != "nt"
