Missing dependency gpstime, when using the CLI

Possible missing dependency. The minimal requirements does not list the gpstime library: https://git.ligo.org/gwinc/inspiral-range/-/blob/master/setup.py#L33-36, but it is used for the CLI (https://git.ligo.org/gwinc/inspiral-range/-/blob/master/inspiral_range/main.py#L7) which leads to

$ python3 -m inspiral_range --ligo '2017-08-17 12:41:04 UTC'
Traceback (most recent call last):
  File "/home/broker/miniconda/lib/python3.8/runpy.py", line 194, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/home/broker/miniconda/lib/python3.8/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "/home/broker/miniconda/lib/python3.8/site-packages/inspiral_range/__main__.py", line 7, in <module>
    from gpstime import GPSTimeParseAction
ModuleNotFoundError: No module named 'gpstime'

Or even

$ python3 -m inspiral_range --help                          
Traceback (most recent call last):
  File "/home/broker/miniconda/lib/python3.8/runpy.py", line 194, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/home/broker/miniconda/lib/python3.8/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "/home/broker/miniconda/lib/python3.8/site-packages/inspiral_range/__main__.py", line 7, in <module>
    from gpstime import GPSTimeParseAction
ModuleNotFoundError: No module named 'gpstime'