# Announcing Rust 1.91.0 **URL:** \ **Category:** Backend Official News\ **Tags:** newsbot, rust, official-news\ **Created:** [31 October 2025 00:30 UTC](https://forum.devtalk.com/t/announcing-rust-1-91-0/220825 "2025-10-31T00:30:03Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![NewsBot](https://forum.devtalk.com/user_avatar/forum.devtalk.com/newsbot/32/1114_2.png) [@NewsBot](https://forum.devtalk.com/u/NewsBot)\ **Post date:** [31 October 2025 00:30 UTC](https://forum.devtalk.com/t/announcing-rust-1-91-0/220825/1 "2025-10-31T00:30:03Z")
A new [Rust](https://devtalk.com/rust) blog post/announcement has been posted! > [@](#): > > The Rust team is happy to announce a new version of Rust, 1.91.0. Rust is a programming language empowering everyone to build reliable and efficient software. > > If you have a previous version of Rust installed via `rustup`, you can get 1.91.0 with: > > ``` > $ rustup update stable > > ``` > > If you don't have it already, you can [get `rustup`](https://www.rust-lang.org/install.html) from the appropriate page on our website, and check out the [detailed release notes for 1.91.0](https://doc.rust-lang.org/stable/releases.html#version-1910-2025-10-30). > > If you'd like to help us out by testing future releases, you might consider updating locally to use the beta channel (`rustup default beta`) or the nightly channel (`rustup default nightly`). Please [report](https://github.com/rust-lang/rust/issues/new/choose) any bugs you might come across! > > ## What's in 1.91.0 stable > > ### `aarch64-pc-windows-msvc` is now a Tier 1 platform > > The Rust compiler supports [a wide variety of targets](https://doc.rust-lang.org/rustc/platform-support.html), but the Rust Team can't provide the same level of support for all of them. To clearly mark how supported each target is, we use a tiering system: > > - Tier 3 targets are technically supported by the compiler, but we don't check whether their code build or passes the tests, and we don't provide any prebuilt binaries as part of our releases. > - Tier 2 targets are guaranteed to build and we provide prebuilt bi... Get the full details here: [Announcing Rust 1.91.0 | Rust Blog](https://blog.rust-lang.org/2025/10/30/Rust-1.91.0/)