Traceback (most recent call last):
  File "/usr/bin/charm-proof", line 9, in <module>
    load_entry_point('charm-tools==1.11.0', 'console_scripts', 'charm-proof')()
  File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 558, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2682, in load_entry_point
    return ep.load()
  File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2355, in load
    return self.resolve()
  File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2361, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
  File "/usr/lib/python2.7/dist-packages/charmtools/proof.py", line 22, in <module>
    from bundles import Bundle
  File "/usr/lib/python2.7/dist-packages/charmtools/bundles.py", line 8, in <module>
    from charmworldlib import bundle as cw_bundle
  File "/usr/lib/python2.7/dist-packages/charmworldlib/bundle.py", line 4, in <module>
    from . import api
  File "/usr/lib/python2.7/dist-packages/charmworldlib/api.py", line 1, in <module>
    import requests
  File "/usr/local/lib/python2.7/dist-packages/requests/__init__.py", line 53, in <module>
    from .packages.urllib3.contrib import pyopenssl
  File "/usr/local/lib/python2.7/dist-packages/requests/packages/urllib3/contrib/pyopenssl.py", line 73, in <module>
    ssl.PROTOCOL_SSLv3: OpenSSL.SSL.SSLv3_METHOD,
AttributeError: 'module' object has no attribute 'PROTOCOL_SSLv3'