NameError: name 'Integer' is not defined

[l29ah]

# dockerscan
Traceback (most recent call last):
  File "/usr/local/bin/dockerscan", line 7, in <module>
    from dockerscan.actions.cli import cli
  File "/usr/local/lib/python3.6/dist-packages/dockerscan/__init__.py", line 1, in <module>
    from .core import *
  File "/usr/local/lib/python3.6/dist-packages/dockerscan/core/__init__.py", line 1, in <module>
    from .model import *
  File "/usr/local/lib/python3.6/dist-packages/dockerscan/core/model.py", line 6, in <module>
    class SharedConfig(Model):
  File "/usr/local/lib/python3.6/dist-packages/dockerscan/core/model.py", line 7, in SharedConfig
    verbosity = Integer(default=0)
NameError: name 'Integer' is not defined