---
title: Android-SDK - 3.13.1
slug: feature-experimentation/release-notes/Uidr-android-sdk-3-13-1
docTags: 
createdAt: 2026-07-20T15:44:58.774Z
---

## [#3131](docId\:F-KtSqRdkXOpzlMa8q34S)3.13.1

February 3rd, 2022

### [#bug-fixes](docId\:F-KtSqRdkXOpzlMa8q34S)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)).
- 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) for details.

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