Updating Joomla to latest

Updating Joomla to the Latest Version

Joomla has moved well beyond the 4.x series. With Joomla 5 now the stable long-term support release and Joomla 6 having entered production, sites still running Joomla 4 are operating on an end-of-life branch that no longer receives security patches. If your site is on Joomla 4, migrating forward is no longer optional — it is a security necessity. This guide walks you through what that process looks like in 2026, covering preparation, the update path, common pitfalls, and how to confirm everything landed correctly.

Whether you are moving from Joomla 4 to Joomla 5, or preparing to step up to Joomla 6, the core discipline is the same: back up first, check compatibility, then update. The tooling has improved significantly since the early Joomla 4 days, and a well-prepared update is a straightforward process.

TL:DR – Joomla updates can get messy. Back up your website before you do anything else, so you can restore it if something goes wrong. Before you update, confirm your hosting environment meets the new version's system requirements, and make sure every extension and template you use has been updated to a version compatible with your target Joomla release. Complete those two tasks and the update itself should be painless.

Where Joomla stands in 2026

Joomla 4 reached end-of-life in 2024. Joomla 5 is now the active long-term support (LTS) branch, bringing a modernised Bootstrap 5 front end, a rebuilt API application layer, improved accessibility compliance, and a significantly tidied administrator interface. Joomla 6 follows the new shorter release cadence the project adopted after Joomla 4, meaning major versions arrive more frequently and each carries a shorter active-support window.

The practical consequence for site owners is that the migration from Joomla 4 to Joomla 5 is not a simple one-click update — it is a migration, and it requires more deliberate preparation than a minor-version bump within the same major release. Extensions and templates built for Joomla 4 are not automatically compatible with Joomla 5 or 6. The Joomla project provides a Migration component and detailed documentation to guide you through this, but the compatibility audit of your installed extensions is the step that demands the most attention.

Why keeping Joomla current matters

Running an end-of-life CMS version exposes your site to unpatched security vulnerabilities — a real risk, not a theoretical one. Beyond security, staying current means:

• Access to performance improvements and modern PHP compatibility, including PHP 8.3 and 8.4 support in Joomla 5 and 6.
• Continued compatibility with third-party extensions and templates, whose developers now target Joomla 5 and 6 rather than 4.
• Eligibility for community support — the Joomla forums and issue tracker focus on supported versions, so help is harder to find for Joomla 4 problems.
• Alignment with modern hosting environments; some managed hosts have begun retiring PHP versions and server configurations that Joomla 4 depended on.

Understanding the update path from Joomla 4

You cannot jump directly from Joomla 4 to Joomla 6 in a single step. The supported path is Joomla 4 → Joomla 5, and then, when you are ready, Joomla 5 → Joomla 6. Each major-version migration uses the Joomla Migration component rather than the standard Update component. If you are already on Joomla 5 and updating within that branch (for example, from 5.1 to 5.2), the standard built-in Update component handles it with no special ceremony.

For sites already on a current Joomla 5 minor release, the remainder of this guide covers the standard update process. For sites still on Joomla 4, treat the steps below as preparation for the migration rather than a direct update — the pre-flight checks, backups, and extension audits are identical regardless of which path you are taking.

Step-by-step: updating Joomla to the latest release

Step 1 — Back up your site

This is non-negotiable. Before touching anything, create a complete backup of both your website files and your database. Akeeba Backup remains the most widely used solution for this and supports Joomla 5 and 6 fully. Alternatively, many managed hosting providers offer snapshot or backup tools in their control panels. Store the backup somewhere other than the server itself — a cloud storage bucket or a local drive. A backup you cannot access is not a backup.

Step 2 — Check system requirements

Joomla 5 requires PHP 8.1 as a minimum, with PHP 8.2 or 8.3 recommended. Joomla 6 raises the floor further. Before running any update, confirm your hosting environment meets the requirements for your target version. Use the Pre-Update Check built into the Joomla Update component — it surfaces PHP version, database version (MySQL 8.0+ or MariaDB 10.4+ are the current baselines), and key PHP configuration values. If your host is still running PHP 7.x or early PHP 8.0, you will need to upgrade that first through your hosting control panel.

Required server settings are flagged clearly in the Pre-Update Check interface. Items shown in red must be resolved before the update can safely proceed. Items shown in amber are recommended but not strictly blocking — Joomla will still function, but you should address them when possible.

Step 3 — Audit extensions and templates

This is the step that catches most people out. Extensions and templates built for Joomla 4 are not guaranteed to work on Joomla 5 or 6. Before updating, go through every installed extension and template and confirm that a compatible version exists for your target Joomla release. Check the developer's website or the Joomla Extensions Directory (JED) for compatibility information.

The Pre-Update Check will flag extensions that report themselves as incompatible or that have no compatibility data available for the target version. Take these warnings seriously — an incompatible extension can break your site after an update, and some breakage can be difficult to reverse without a restore. If a critical extension has no Joomla 5-compatible version, you need to find an alternative before migrating, not after.

The Joomla 5 era has also seen a significant shift in template ecosystems. Many popular Joomla 4 template providers have released dedicated Joomla 5 versions, but these are often new purchases or paid upgrades rather than free updates. Factor this into your planning.

Step 4 — Test on a staging environment

If your hosting setup allows it, restore your backup to a staging environment and run the update there first. This is the single most effective way to catch problems before they affect your live site. Many modern hosting control panels — including those from providers such as SiteGround, Cloudways, and Kinsta — offer one-click staging environments. Use them. A failed update on staging costs you nothing; a failed update on production can cost you traffic, revenue, and reputation.

Step 5 — Run the update

For minor updates within a supported Joomla major version (for example, Joomla 5.1 to 5.2), the process through the built-in Update component is straightforward:

• Log in to the Joomla administrator backend.
• Navigate to System to open the System Dashboard.
• Under the Updates panel, click the Joomla link to open the Update component.
• Review the Pre-Update Check results and resolve any flagged issues before continuing. You must acknowledge warnings about potentially incompatible extensions before the update will proceed.
• Check the confirmation checkbox to confirm you have taken a backup, then click Install the Update.
• Monitor the progress screen. On some servers, particularly those with large sites or slower I/O, this can take several minutes. Do not close the browser tab or navigate away until the process completes.

For a major-version migration (Joomla 4 to Joomla 5), you will use the Joomla Migration component instead, which walks you through additional compatibility steps and data migration tasks specific to the version jump. The Joomla documentation site at docs.joomla.org has detailed migration guides for each supported path.

Troubleshooting common issues

The most frequent problems after a Joomla update fall into a few categories: extension or template incompatibilities causing white screens or PHP fatal errors; database schema mismatches that surface as administrator errors; and permission problems on the filesystem that prevent update files from being written. For extension issues, the fastest fix is usually to disable the offending extension through the database directly (if the administrator is inaccessible) and then update or replace it. For database schema issues, the Fix button in the Joomla database maintenance tool under System → Maintenance → Database resolves most cases automatically. For permission issues, your hosting provider's support team is your best resource, as the correct permissions vary by server configuration.

Keeping extensions updated before you update Joomla, and testing on staging, eliminates the vast majority of these problems before they can reach your live site.

Verifying the update succeeded

Once the update process reports completion, confirm the version number shown in the Joomla System Information panel matches the release you intended to install. Walk through your site's front end and check key pages, forms, and any dynamic functionality. Log in as a regular user if your site has registered users, and verify that the experience is intact. Check your site's error logs for any new PHP warnings or notices that might indicate a partially incompatible extension still running. Address anything you find promptly — issues left unresolved after an update tend to compound.

Conclusion

Joomla has matured considerably, and so has its update tooling. The discipline required for a safe update has not changed — back up, check compatibility, test, then update — but the stakes of running an outdated version are higher now that Joomla 4 is end-of-life and active development has moved firmly to the Joomla 5 and 6 branches. Treat the migration from Joomla 4 as a planned project rather than a routine maintenance task, give your extension audit the time it deserves, and you will come through it with a faster, more secure, and better-supported site.

References

See also:

• Joomla.org — Official Joomla website
• Joomla Migration Guide — Joomla! Documentation
• Pre-Update Check — Joomla! Documentation
• Joomla Extensions Directory (JED)
• Akeeba Backup for Joomla