future>=0.16.0<0.17
plac<2.0,>=1.0
pydub<0.23,>=0.22
tqdm>=4.0<5.0

[:python_version < "3.4"]
backports.tempfile
pathlib<2.0,>=1.0

[tests]
pytest<4.0,>=3.7
pylint<2.0,>=1.0
