---
title: Android-SDK - 5.1.1
slug: feature-experimentation/release-notes/android-sdk-5-1-1
docTags: 
createdAt: 2026-07-20T15:45:34.646Z
---

## 5.1.1

[#511](docId\:PqDRwAxUF5DubheiUQXob)

January 20th, 2025

### Enhancements and fixes

[#enhancements-and-fixes](docId\:PqDRwAxUF5DubheiUQXob)

- Upgrade Java Core SDK to 4.3.1 from 4.3.0.
- Excludes CMAB from UserProfileService.
- Fixes missing bucketing reasons in CMAB decision path.

[https://github.com/optimizely/android-sdk/releases/tag/5.1.1](https://github.com/optimizely/android-sdk/releases/tag/5.1.1)