
Pyrotek
Silverstripe site for large business
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Upgrade Silverstripe for Security and Performance

A Silverstripe upgrade is more than a version bump. It’s a critical part of keeping your website secure, stable, and maintainable.
Each major release introduces improvements to performance, security, and developer tooling, while phasing out older APIs. Without regular upgrades, your site becomes harder to maintain, more vulnerable to security risks, and increasingly expensive to extend.
Upgrades can be complex, especially when custom modules, legacy code, or third‑party integrations are involved. That’s where experienced Silverstripe developers make all the difference.
A typical Silverstripe upgrade includes:
Every Silverstripe project is unique, so the upgrade path varies, especially when jumping major versions.
At Innoweb, we follow a structured, low‑risk upgrade process designed to keep your site stable throughout:
This approach ensures your Silverstripe CMS remains fast, secure, and ready for future development.
We’ve spent years working with Silverstripe across complex, customised, and enterprise‑level projects. Our team understands the nuances of upgrading sites with:
Our focus is always on stability, clarity, and long‑term maintainability, so your team can keep working without disruption, and your website remains ready for future growth.
Silverstripe’s adoption of semantic versioning (from 3.2 onward) and the newer release policy introduced with Silverstripe 5 make the upgrade cycle more predictable — but also mean older versions reach end‑of‑life sooner.
Many older sites still run on Silverstripe 2.4 or 3.x, which have been unsupported for years and urgently need upgrading.
| 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 Silverstripe 3 versions reached end‑of‑life in 2021. Silverstripe 4 reached end‑of‑life in June 2025 with the release of Silverstripe 6.
To stay secure and benefit from the latest features, we strongly recommend upgrading older sites to the latest version.
We can review your site and provide a clear estimate for upgrading to Silverstripe 6.
Our Work

Silverstripe site for large business

Multimedia education platform for biotech company

Silverstripe performance improvements

Silverstripe site for not-for-profit organisation
Testimonials
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.
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!