############################# Upgrading from 4.2.5 to 4.2.6 #############################

Please refer to the upgrade instructions corresponding to your installation method.

• :ref:Composer Installation App Starter Upgrading <app-starter-upgrading>
• :ref:Composer Installation Adding CodeIgniter4 to an Existing Project Upgrading <adding-codeigniter4-upgrading>
• :ref:Manual Installation Upgrading <installing-manual-upgrading>

.. contents:: :local: :depth: 2

Project Files

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A few files in the project space (root, app, public, writable) received cosmetic updates. You need not touch these files at all. There are some third-party CodeIgniter modules available to assist with merging changes to the project space: Explore on Packagist <https://packagist.org/explore/?query=codeigniter4%20updates>_.

All Changes

This is a list of all files in the project space that received changes; many will be simple comments or formatting that have no effect on the runtime:

• app/Config/App.php
• app/Config/ContentSecurityPolicy.php
• app/Config/Routes.php
• app/Config/Validation.php