w3lib>=1.17.0
queuelib
pyOpenSSL
cssselect>=0.9
six>=1.5.2
parsel>=1.5
PyDispatcher>=2.0.5
service_identity

[:platform_python_implementation == "PyPy"]
PyPyDispatcher>=2.1.0

[:python_version != "3.4"]
Twisted>=13.1.0
lxml

[:python_version == "3.4"]
Twisted<=19.2.0,>=13.1.0
lxml<=4.3.5
