If you hit an error like this: Bad md5 hash for package https://pypi.python.org/packages/source/c/colorama/colorama-0.2.5.tar.gz#md5=c76f67ead9dc7c83700c57695ebb741e (from https://pypi.python.org/simple/colorama/) It means that our friends at colorama have decided to re-release something with the same version, so now the version you have locally in your cache does not match what's on PyPI. You should see a line above it like this: Using download cache from /home/mordred/ca che/pip/https%3A%2F%2Fpypi.python.org%2Fpackages%2Fsource%2Fc%2Fcolorama%2Fcolorama-0.2.5.tar.gz All you need to do to fix is: rm /home/mordred/cache/pip/https%3A%2F%2Fpypi.python.org%2Fpackages%2Fsource%2Fc%2Fcolorama%2Fcolorama-0.2.5.tar.gz