Attention
TYPO3 v12 has reached end-of-life as of April 30th 2026 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 v12 here: TYPO3 ELTS.
Upgrading extensions
How you upgrade extensions depends on your role and project setup:
- If you use third-party extensions, update them via Composer or the Extension Manager.
- If you maintain your own custom extension or site package, refer to the dedicated guide on updating your codebase.
Managing extensions with Composer
Covers installation, upgrades, downgrades, removal, and update reverts for Composer-based TYPO3 projects.
Managing extensions via Extension Manager
For projects not using Composer, extensions can be installed and updated using the TYPO3 backend's Extension Manager.
Maintaining your own extension
If you maintain a custom extension or site package, see this guide for tips on versioning, upgrading for new TYPO3 releases, and ensuring compatibility.