cryptography>=2.0
cssselect>=0.9.1
lxml>=3.5.0
parsel>=1.5.0
PyDispatcher>=2.0.5
pyOpenSSL>=16.2.0
queuelib>=1.4.2
service_identity>=16.0.0
six>=1.10.0
w3lib>=1.17.0
zope.interface>=4.1.3
protego>=0.1.15

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

[:python_version == "2.7"]
Twisted>=16.0.0

[:python_version >= "3.5"]
Twisted>=17.9.0
