---
title: Rust SDK 0.8.4
summary: null
url: https://www.fastly.com/documentation/reference/changes/2022/03/rust-sdk-0.8.4
---

## Added

- Added `set_framing_headers_mode` and `with_framing_headers_mode` methods to `Request` and `Response`, which allow you to manually control the `Content-Length` and `Transfer-Encoding` headers sent for a request or a response.

## Changed

- Switched to Rust 2021 edition, so the minimum supported Rust version is now 1.56.0.