invalid version requirement specifiers in ethereum setup command

[dionysusyan]

Hi, I am very new to coding and do not know much so please.

I was pip installing pyethapp and ran into this error, it seems that the version quoted is outdated:
error in ethereum setup command:
'tests_require' must be a string or list of strings containing valid project/version requirement specifiers; Unordered types are not allowed

I would think that the issue is project/version requirement specifiers.

test_require is already a list of strings specifying 'mock==2.0.0',
'pytest-mock==1.6.0',

Which of these are outdated?
this code can be found in setup.py