Upgrading from Silverstripe 4 to Silverstripe 5

Reduce security risk, improve long-term stability, and future-proof your website with a structured Silverstripe upgrade approach. We provide Silverstripe 4 to Silverstripe 5 Upgrade Services to Sydney, Brisbane and Sunshine Coast.

Why Organisations Are Still on Silverstripe 4

Silverstripe 4 has served enterprise and government websites well for years. Many organisations stayed on it because:

• The website is stable and “still works”
• Custom functionality makes upgrades feel risky
• Internal teams are resource-constrained
• The cost of change feels hard to justify

Unfortunately, stability today does not equal safety tomorrow.

The Real Risks of Staying on Silverstripe 4

As platforms mature, the risk isn’t sudden failure — it’s gradual exposure.

Organisations remaining on Silverstripe 4 face:

• Increasing security vulnerabilities
• Reduced compatibility with modern hosting and infrastructure
• Declining third-party module support
• Difficulty passing security reviews or penetration tests
• Higher long-term maintenance and fix costs

At an enterprise level, this becomes a governance and risk issue, not just a technical one.

What Silverstripe 5 Changes (At a High Level)

Silverstripe 5 represents a modernisation of the platform — not a cosmetic update.

Key improvements include:

• Improved security foundations
• Modernised dependencies and architecture
• Better alignment with current PHP ecosystems
• Stronger long-term support trajectory

For organisations planning future enhancements, Silverstripe 5 is the baseline moving forward.

Why Silverstripe 4 → 5 Upgrades Are Not Simple

This upgrade is rarely “click and go”.

Enterprise websites often include:

• Custom modules and extensions
• Legacy integrations
• Role-based workflows
• Complex content structures

Without careful planning, upgrades can introduce:

• Broken functionality
• Data integrity issues
• Unexpected downtime
• Increased remediation cost

This is why many organisations delay — and why upgrades should be treated as controlled transition projects, not maintenance tasks.

UnDigital’s Upgrade Philosophy

We don’t treat Silverstripe upgrades as version jumps.

We treat them as:

• Risk reduction exercises
• Stability improvements
• Opportunities to reduce technical debt

Our approach prioritises:

• Continuity
• Security
• Predictable outcomes
• Minimal operational disruption

 Who Should Be Considering This Upgrade Now

• Government and regulated organisations
• Enterprise websites subject to security reviews
• Sites relying on long-term vendor support
• Organisations planning future feature development
• Teams already experiencing maintenance friction

If you’re researching Silverstripe 4 to 5 upgrades, you’re likely already at this decision point.

Common Questions We Hear

Is Silverstripe 4 still safe?
It may function, but its risk profile increases over time as support and compatibility decline.

Can we skip straight to Silverstripe 6?
That depends on architecture, customisation, and organisational readiness. This decision should be assessed, not guessed.

Is an upgrade the same as a rebuild?
No — but poorly handled upgrades often turn into one. Proper planning avoids that.

Next Step

If your organisation relies on Silverstripe 4, upgrading is about control, not panic.

We can help you:

• Assess risk
• Plan the upgrade
• Execute safely
• Support the platform long-term