ipython==3.1.0
ipdb==0.8.1
pytest==2.7.1
pytest-cov==1.8.1
mock==1.0.1
vcrpy==1.5.2
flake8==2.4.1
-r requirements.txt

ipython==3.1.0
ipdb==0.8.1
pytest==2.9.2
pytest-cov==1.8.1
mock==1.0.1
vcrpy==1.5.2
flake8==2.4.1

Upgrade to working version of pytest; don't install requirements.txt
Upgrade to working version of pytest; don't install requirements.txt
