Installing on Ubuntu 16 server

I've downloaded 7.2.2 and have installed the Debian package, but when I try to run the post-install script like so:

sudo /opt/vertica/sbin/install_vertica --hosts 127.0.0.1 --deb vertica_7.2.2-1_amd64.deb --dba-user dbadmin --data-dir /mnt/data/vertica --ignore-aws-instance-type

I get this error:

Vertica Analytic Database 7.2.2-1 Installation Tool

Error: HALT(eS0322): Debian-based OS version 'stretch/sid' is not supported.

Traceback (most recent call last):

  File "/opt/vertica/oss/python/lib/python2.7/site-packages/vertica/install/__init__.py", line 1171, in run_install

    options = option_parser()

  File "/opt/vertica/share/eggs/vertica/install/__main__.py", line 94, in _parse_options

    opsys = vos.OpSys()

  File "/opt/vertica/oss/python/lib/python2.7/site-packages/vertica/system/opsys.py", line 44, in __init__

    self.version()

  File "/opt/vertica/oss/python/lib/python2.7/site-packages/vertica/system/opsys.py", line 152, in version

    eid = 'S0322', sev = Severity.HALT)

  File "/opt/vertica/oss/python/lib/python2.7/site-packages/vertica/platform/check/assertions.py", line 91, in vassert

    raise VerticaAssertionError(msg, **kwargs)

VerticaAssertionError: HALT(eS0322): Debian-based OS version 'stretch/sid' is not supported.

Installation FAILED with errors.

How do I fix this?

thanks