---
title: "Upgrading extensions"
manual: "TYPO3 Explained"
version: "13.4"
permalink: "https://docs.typo3.org/permalink/t3coreapi:upgradingextensions@13.4"
source: "Administration/Upgrade/UpgradingExtensions/Index.rst"
rendered: "2026-09-23T17:02:48+00:00"
---

# Upgrading extensions {#upgradingextensions}

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](https://docs.typo3.org/permalink/t3coreapi:extensions-composer@13.4)**

Covers installation, upgrades, downgrades, removal, and update reverts
for Composer-based TYPO3 projects.

-   [Upgrade an extension](https://docs.typo3.org/permalink/t3coreapi:extensions-composer-update@13.4)
-   [Downgrade an extension](https://docs.typo3.org/permalink/t3coreapi:extensions-composer-downgrade@13.4)
-   [Revert updates safely](https://docs.typo3.org/permalink/t3coreapi:extensions-composer-update-revert@13.4)

**[Managing extensions via Extension Manager](https://docs.typo3.org/permalink/t3coreapi:extensions-classic-mode-management@13.4)**

For projects not using Composer, extensions can be installed and updated
using the TYPO3 backend's Extension Manager.

-   [Extension Manager documentation](https://docs.typo3.org/permalink/t3coreapi:extensions-classic-mode-management@13.4)

**[Maintaining your own extension](https://docs.typo3.org/permalink/t3coreapi:update-extension@13.4)**

If you maintain a custom extension or site package, see this
guide for tips on versioning, upgrading for new TYPO3 releases, and
ensuring compatibility.

-   [Update strategy for extension maintainers](https://docs.typo3.org/permalink/t3coreapi:update-extension@13.4)