Missing dependancy on python3-zeroconf

After building the package, installing it, and running freedombox-desktop-client:

Traceback (most recent call last):
  File "/usr/bin/freedombox-desktop-client", line 11, in <module>
    load_entry_point('freedombox-desktop-client==0.0.1', 'console_scripts', 'freedombox-desktop-client')()
  File "/home/james/.local/lib/python3.6/site-packages/pkg_resources/__init__.py", line 487, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/home/james/.local/lib/python3.6/site-packages/pkg_resources/__init__.py", line 2728, in load_entry_point
    return ep.load()
  File "/home/james/.local/lib/python3.6/site-packages/pkg_resources/__init__.py", line 2346, in load
    return self.resolve()
  File "/home/james/.local/lib/python3.6/site-packages/pkg_resources/__init__.py", line 2352, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
  File "/usr/lib/python3/dist-packages/freedombox_desktop_client/main.py", line 28, in <module>
    from zeroconf import ServiceBrowser, Zeroconf
ModuleNotFoundError: No module named 'zeroconf'