NotImplementedError: Command "--update" not implemented

sdkmanager --update

Output:

Traceback (most recent call last):
  File "/usr/bin/sdkmanager", line 33, in <module>
    sys.exit(load_entry_point('sdkmanager==0.6.11', 'console_scripts', 'sdkmanager')())
             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/lib/python3/dist-packages/sdkmanager.py", line 1243, in main
    raise NotImplementedError('Command "--%s" not implemented' % command)
NotImplementedError: Command "--update" not implemented

Related to #1, Benjamin_Loison/sdkmanager/issues/{5,2}.