---
title: "Upgrading the TYPO3 Core and extensions"
manual: "TYPO3 Explained"
version: "main"
permalink: "https://docs.typo3.org/permalink/t3coreapi:upgrading@main"
source: "Administration/Upgrade/Index.rst"
modified: "2026-09-15T12:49:12+00:00"
---

# Upgrading the TYPO3 Core and extensions

![The top bar of a TYPO3 backend showing the current version being used.](../../Images/ManualScreenshots/Backend/Typo3Version.png)

**[Patch/bugfix updates](https://docs.typo3.org/permalink/t3coreapi:minor@main)**

Patch/bugfix updates contain bugfixes and/or security updates. This section details
how to install them using Composer.

**[Major upgrades](https://docs.typo3.org/permalink/t3coreapi:major@main)**

This chapter details how major upgrades are installed using Composer and
highlights what tasks need to be carried out before and after the core is updated.

**[Upgrading extensions](https://docs.typo3.org/permalink/t3coreapi:upgradingextensions@main)**

Just like TYPO3's core, extensions also need to be regularly updated.
This chapter details how to upgrade extensions using Composer.

**[Third-party Tools](https://docs.typo3.org/permalink/t3coreapi:tools@main)**

Tools and resources developed by the community that can assist with common
upgrade and maintenance tasks.

**[Classic mode upgrade guide](https://docs.typo3.org/permalink/t3coreapi:classic-mode-upgrade@main)**

Using TYPO3 without Composer? This chapter details how to upgrade TYPO3 manually.

**[Applying Core patches](https://docs.typo3.org/permalink/t3coreapi:applying-core-patches@main)**

Learn how to apply Core patches in a future proof way: Automatize
patch application with `cweagans/composer-patches`. Download
a patch for the Core.

**[Migrate a TYPO3 installation to Composer](https://docs.typo3.org/permalink/t3coreapi:migratetocomposer@main)**

Information on how to migrate a Classic mode installation of TYPO3 to a Composer based installation.

**[Migrate content](https://docs.typo3.org/permalink/t3coreapi:migratecontent@main)**

This chapter details how pages and content can be exported and then imported into another installation of TYPO3.