---
title: Android-SDK - 3.13.1
slug: feature-experimentation/release-notes/android-sdk-3-13-1
docTags: 
createdAt: 2026-07-20T15:45:41.302Z
---

## 3.13.1

February 3rd, 2022

### Bug Fixes

\* Move background-watchers file read to a background thread when DatafileRescheduler is invoked.
This will fix a potential source of ANRs (\[#401]\([https://github.com/optimizely/android-sdk/pull/401](https://github.com/optimizely/android-sdk/pull/401))).
\* Fix NotificationManager to be thread-safe (add-handler and send-notifications can happen concurrently). See the Optimizely Java SDK release \[3.10.1]\([https://github.com/optimizely/java-sdk/releases/tag/3.10.1](https://github.com/optimizely/java-sdk/releases/tag/3.10.1)) for details.

[https://github.com/optimizely/android-sdk/releases/tag/3.13.1](https://github.com/optimizely/android-sdk/releases/tag/3.13.1)