---
title: Swift-SDK - 5.2.1
slug: feature-experimentation/release-notes/swift-sdk-5-2-1
docTags: 
createdAt: 2026-07-20T15:44:51.989Z
---

## 5.2.1

[#521](docId\:EOAlVZ7ORAO-vPwBYiD9Z)

January 23rd, 2026

### Functionality Enhancement

[#functionality-enhancement](docId\:EOAlVZ7ORAO-vPwBYiD9Z)

- **CMAB Decision**: Excluded CMAB decision from user profile service ([#620](https://github.com/optimizely/swift-sdk/pull/620))
- **Event Retry Strategy**: Updated event dispatcher retry logic for improved reliability ([#618](https://github.com/optimizely/swift-sdk/pull/618))

[https://github.com/optimizely/swift-sdk/releases/tag/v5.2.1](https://github.com/optimizely/swift-sdk/releases/tag/v5.2.1)