Upgrading Drupal

Preparing your site to upgrade to a newer major version

There are tools available to ensure your Drupal site is compatible with new major releases of Drupal core.

• Deprecation checking and correction tools to prepare for a new Drupal major version
• Preparing Drupal.org projects for Drupal 9
• Preparing for use of Twig 2 in Drupal 9

Upgrading Drupal

Provides an overview of the upgrade process and instructions.

• Upgrade process overview
• How to upgrade from Drupal 11 to Drupal 12
• How to upgrade from Drupal 10 to Drupal 11
• How to upgrade from Drupal 9 to Drupal 10
• How to upgrade from Drupal 8 to Drupal 9
• Migrating dependencies on core jQuery UI libraries

Upgrading from Drupal 6 or Drupal 7

Upgrading from a legacy Drupal 6 or Drupal 7 site.

• Learn key Drupal concepts prior to upgrading
• Overview
• Preparation
• Choosing the upgrade approach
• Upgrading multilingual Drupal 6
• Upgrading multilingual Drupal 7
• Drupal 9 (or later) migrate modules
• Upgrade using web browser
• Upgrade using Drush
• Known issues when upgrading from Drupal 6 or 7
• Customize migrations
• Contributing to Migrate

After the upgrade

Step and tips after the upgrade is completed