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The Compatibility Guide and Upgrade Planning gives the allowed versions for third-party software dependencies.

Upgrade

When upgrading an existing PhixFlow instance to a new release you should follow the standard instructions plus any special instructions for each intermediate releaseThe majority of PhixFlow upgrades are very simple and are applied by following the standard instructions. However, well in advance of each upgrade, please check Compatibility Guide and Upgrade Planning. In particular this page provides information which wil help you plan if you need a database upgrade or need to install an updated version of the Java runtime. Very occasionally there are also special instructions for an upgrade. These can all be viewed from Compatibility Guide and Upgrade Planning.