mock==1.0.1
invoke==0.9.0
pytest==2.6.3
httpretty==0.8.4
pytest-cov==1.8.1

-r requirements.txt

mock==1.0.1
pytest==2.6.3
httpretty==0.8.4
pytest-cov==1.8.1

-r requirements.txt

Remove invoke from dev requirements.txt
Remove invoke from dev requirements.txt
