> Silverstripe Upgrade Services
Keeping your Silverstripe CMS up to date is essential for security, performance, and long‑term maintainability. A Silverstripe upgrade ensures your website stays compatible with modern PHP versions, supported modules, and current best practices, reducing technical debt and preventing costly issues down the track. Whether you’re upgrading a single minor version or jumping multiple major releases, we provide a structured, low‑risk upgrade process that keeps your site stable and future‑ready.
Why You Need a Proper Silverstripe Upgrade
A Silverstripe upgrade isn’t just about staying current. It’s about keeping your website secure, stable, and compatible with modern PHP versions and hosting environments.
Each major Silverstripe CMS release introduces improvements to performance, security, and developer tooling, while also deprecating older APIs. Without regular upgrades, your site becomes harder to maintain, more vulnerable to security issues, and increasingly expensive to extend.
Upgrading Silverstripe can be complex, especially if your project includes custom modules, legacy code, or integrations with third‑party systems. That’s where experienced Silverstripe developers make all the difference.
What’s Involved in a Silverstripe Upgrade
A Silverstripe upgrade typically includes:
- Updating the CMS and Framework to the latest supported versions
- Migrating deprecated APIs and refactoring legacy code
- Updating custom modules or replacing unsupported ones
- Ensuring compatibility with the required PHP version
- Reviewing and updating Composer dependencies
- Running database schema updates and content migrations
- Testing templates, forms, and custom functionality
- Verifying that third‑party integrations still work as expected
Because every Silverstripe project is different, the upgrade path can vary significantly, especially when jumping multiple major versions.
How We Approach Silverstripe Upgrades
At Innoweb, we take a structured, low‑risk approach to every Silverstripe upgrade:
- Audit & Assessment
We review your current Silverstripe version, custom code, modules, and hosting environment to map out the upgrade path. - Staged Upgrade Process
For multi‑version jumps, we upgrade step‑by‑step through each major release to ensure compatibility and minimise disruption. - Code Modernisation
Deprecated APIs are replaced, legacy patterns are refactored, and modules are updated or swapped for supported alternatives. - Comprehensive Testing
We test all templates, forms, workflows, and integrations to ensure everything works exactly as expected. - Deployment & Verification
Once the upgrade is deployed, we verify performance, security, and stability in the live environment.
This process ensures your Silverstripe CMS remains fast, secure, and ready for future development.
Supported Silverstripe Versions
With the adoption of semantic versioning with version 3.2, upgrading a Silverstripe site has become easier. With Silverstripe 5 a new release policy has been adopted as well, which makes the release cycle of Silverstripe more predictable and reliable.
But it also means that older versions of Silverstripe are not maintained for as long as they used to be. Silverstripe Ltd has published a release roadmap on their website which helps to plan necessary upgrades to existing sites.
We know that there are many old sites around, still using Silverstripe 2.4 or 3. These versions have reached their end-of-life a while ago and need to be upgraded as soon as possible.
| Silverstripe Version | PHP Versions | End-of-life |
|---|---|---|
| 2.4 | 5.2.4 - 5.6 | 31/03/2015 |
| 3.0 | 5.3.2 - 5.6 | 12/10/2015 |
| 3.1 | 5.3.2 - 5.6 | 31/12/2016 |
| 3.x | 5.3.3 - 7.4 | 30/09/2021 |
| 4.x | 7.4 - 8.1 | 10/06/2025 |
| 5.x | 8.1 - 8.3 | April 2027 |
| 6.x | 8.3 - 8.5 | April 2029 |
All versions of Silverstripe 3 have reached their end-of-life in September 2021. Silverstripe 4 has reached its end-of-life with the release of Silverstripe 6, in June 2025.
In order to keep your website up-to-date with the latest features and security releases, we recommend upgrading any old websites to the latest version of Silverstripe.
Upgrades from 3 or 4 are quite large projects because a lot of things have changed. Upgrading from 4 to 5 is usually relatively quick, while upgrades from 5 to 6 are again a bit more work.
We can have have a look at your site and let you know how much it would take to upgrade it to Silverstripe 6.
Why Choose Innoweb for Your Silverstripe Upgrade
With years of hands‑on experience across complex Silverstripe projects, we know how to handle upgrades efficiently and safely.
We’ve upgraded sites with custom modules, bespoke workflows, legacy integrations, and multi‑environment deployments.
Our focus is always on stability, clarity, and long‑term maintainability, so your team can keep working without disruption.
Ready to talk? Talk to us now about how we can help you upgrade your Silverstripe site.
I've found Innoweb great to deal with, very responsive and collaborative in working to tight client deadlines. The team was very accommodating in working with me as the project scope grew and delivered a great suite of websites!
Florian is a highly skilled developer, a consummate professional and a pleasure to work with - quick, responsive and responsible. He understands the nature of the business and always gives his best! I highly recommend him.