---
title: Update Policy
description: 'Unico''s SDK update policy: why it exists, the minimum timelines clients must meet, and how to stay supported and protected.'
canonical: https://developer.unico.io/developers/sdks-and-tools/update-policy
locale: en
generated_by: markdown-export
---

- [/](/)
- [SDKs and Tools](/developers/sdks-and-tools/overview)
- Update Policy

**On this page# Update Policy

New attack vectors emerge constantly, and outdated SDKs are the primary surface for Injection and Liveness fraud. Staying on the latest Unico SDK version is the most effective protection available.
It is **the client's responsibility** to maintain a healthy SDK update routine. Unico commits to releasing updated versions in response to emerging threats and keeping clients informed of new releases.
### Why do we have an update policy?​

Fraudster techniques evolve rapidly. An SDK version that is secure today may be vulnerable within weeks. The only reliable defense is staying current. This policy defines the minimum timelines clients must meet to remain supported and protected.
### Categories of updates​

CategoryScopeImplementation deadlineSupport after deadline**Critical**Addresses active fraud attacks or security vulnerabilities**5 calendar days**Older versions are no longer supported; update is required before Unico provides assistance**Non-Critical**Technological improvements and non-security enhancements**60 calendar days**Support continues, but technical assistance requires updating to the latest version
Critical updates are identified in the release notes with a **Critical Update** danger tag.
These deadlines apply uniformly to all clients regardless of capacity or usage volume.
### How to update​

Refer to the standard installation guide for your platform:

[Web App Integration](/developers/sdks-and-tools/web)
[iOS SDK](/developers/sdks-and-tools/ios/requirements)
[Android SDK](/developers/sdks-and-tools/android/requirements)
[Flutter SDK](/developers/sdks-and-tools/flutter/requirements)

Best practiceAvoid updating the SDK simultaneously with other libraries or components. Isolating the SDK update makes it easier to identify the root cause of any issues. See [Best Practices](/developers/sdks-and-tools/best-practices-for-sdk-implementation) for details.
### API contract breaks​

API contract breaks are **restricted to Major version releases** and follow semantic versioning principles. Minor and patch releases do not introduce breaking changes to the API contract. Unico avoids Major version bumps whenever possible to minimize migration effort.
### Release notes​

Each platform publishes release notes detailing new features, bug fixes, and fraud mitigations included in every version:

[Android release notes](/developers/sdks-and-tools/android/resources/release-notes)
[iOS release notes](/developers/sdks-and-tools/ios/resources/release-notes)
[Flutter release notes](/developers/sdks-and-tools/flutter/resources/release-notes)

### Update notifications​

Unico notifies clients of new releases via email:
Update typeNotification timingContent**Critical**Immediately upon releaseRelease details, 5-day deadline, Customer Success follow-up**Non-Critical**Monthly summaryList of key changes across all non-critical releases, 60-day deadline reminderLast updated on Oct 8, 2026**