> For the complete documentation index, see [llms.txt](https://docs.pentaho.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pentaho.com/install/9.3-install/pentaho-upgrade-cp.md).

# Pentaho upgrade

You can upgrade your Pentaho products from version 8.3 or later to version 9.3 with the Pentaho Upgrade Installer.

The upgrade installer checks your environment for version 8.3 or later Pentaho products, creates a backup of these products, then upgrades them to version 9.3. The Pentaho Upgrade Installer works for any Pentaho products you have installed on your server or workstations, including your Pentaho Server. The Pentaho Upgrade Installer requires 22 GB of free space to perform the upgrade process.

**Note:** The Pentaho Upgrade Installer is not supported on macOS.

This upgrade documentation assumes you are an IT administrator upgrading all your Pentaho products from 8.3 or later to 9.3. If any of your Pentaho products are a version earlier than 8.3, the Pentaho Upgrade Installer does not proceed with the upgrade process.

If you need to upgrade your Pentaho products from a version earlier than 8.3, you must upgrade your products to version 8.3, then use the Pentaho Upgrade Installer to move from version 8.3 to 9.3. See the [Pentaho Server Upgrade Installer](https://support.pentaho.com/hc/en-us/articles/360021841132-Update-8-1-or-8-2-to-8-3-with-Pentaho-Server-Upgrade-Installer) for instructions on upgrading from earlier versions to version 8.3.

To learn about changes made in previous releases, see the What's New section for the respective releases.


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