Attention

TYPO3 v11 has reached end-of-life as of October 31st 2024 and is no longer being maintained. Use the version switcher on the top left of this page to select documentation for a supported version of TYPO3.

Need more time before upgrading? You can purchase Extended Long Term Support (ELTS) for TYPO3 v11 here: TYPO3 ELTS.

Major upgrade

Pre-upgrade tasks

Before upgrading TYPO3 to a major release, there are several tasks that can be performed to help ensure a successful upgrade and help minimise any potential downtime.

Upgrade the core

This chapter details how to perform a major upgrade using Composer.

Post-upgrade tasks

Once TYPO3's core has been upgraded, there a few tasks that need to be actioned to complete the process.