---
title: CSharp-SDK - 3.1.1
slug: feature-experimentation/release-notes/csharp-sdk-3-1-1
docTags: 
createdAt: 2026-07-20T15:45:04.128Z
---

June 19th, 2019

\### Bug Fixes:
\* Build OptimizelySDK.NetStandard16.dll in Release mode

[https://github.com/optimizely/csharp-sdk/releases/tag/v3.1.1](https://github.com/optimizely/csharp-sdk/releases/tag/v3.1.1)