# pyats version

> View and upgrade the pyATS installation.
> More information: <https://developer.cisco.com/pyats/>.

- Display version of all packages:

`pyats version check`

- Display outdated packages:

`pyats version check --outdated`

- Update packages to the most recent version:

`pyats version update`

- Update or downgrade packages to a specific version:

`pyats version update {{version}}`