zappa deploy dev - terminal output

Calling deploy for stage dev..
Downloading and installing dependencies..
Oh no! An error occurred! :(

==============

Traceback (most recent call last):
  File "/home/velotio/Envs/django_zappa_sample/local/lib/python2.7/site-packages/zappa/cli.py", line 2610, in handle
    sys.exit(cli.handle())
  File "/home/velotio/Envs/django_zappa_sample/local/lib/python2.7/site-packages/zappa/cli.py", line 505, in handle
    self.dispatch_command(self.command, stage)
  File "/home/velotio/Envs/django_zappa_sample/local/lib/python2.7/site-packages/zappa/cli.py", line 539, in dispatch_command
    self.deploy(self.vargs['zip'])
  File "/home/velotio/Envs/django_zappa_sample/local/lib/python2.7/site-packages/zappa/cli.py", line 709, in deploy
    self.create_package()
  File "/home/velotio/Envs/django_zappa_sample/local/lib/python2.7/site-packages/zappa/cli.py", line 2171, in create_package
    disable_progress=self.disable_progress
  File "/home/velotio/Envs/django_zappa_sample/local/lib/python2.7/site-packages/zappa/core.py", line 595, in create_lambda_zip
    installed_packages = self.get_installed_packages(site_packages, site_packages_64)
  File "/home/velotio/Envs/django_zappa_sample/local/lib/python2.7/site-packages/zappa/core.py", line 751, in get_installed_packages
    pip.get_installed_distributions()
AttributeError: 'module' object has no attribute 'get_installed_distributions'

==============

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