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Documentation | 2025.2

# Upgrading P4 Code Review

The section describes how to upgrade a P4 Code Review package or tarball installation to a newer release.

- When upgrading to P4 Code Review 2022.3 or later, ensure that you upgrade P4 Visual Client (P4V) to 2021.3 or later.

- In the P4 Code Review 2024.3 release, Redis binary has been upgraded to version 7.2.4. As a result of this upgrade, the kernel and glibc requirements have automatically changed from version 2.6 to 3.10. If you need to run Redis under kernel version 2.6, you can do either of the following:

  - Compile Redis from sources on the target host meeting the target kernel.

  - Or use your own older Redis installation.

If you are not already running P4 Code Review, none of these instructions apply to you. Instead, see the Swarm installation instructions.

Choose your upgrade process:

- Upgrading a Ubuntu package installation.
- Upgrading a RHEL package installation.
- Upgrading a Docker container.
- Upgrading a tarball installation.

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