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Rust Blog·03 November 2026·1 min read

Announcing rustup 1.29.3

The rustup team has published a new point release of rustup, 1.29.3. Rustup is the recommended tool to install Rust , a programming language that empowers everyone to build reliable and efficient software.

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The rustup team has published a new point release of rustup, 1.29.3. Rustup is the recommended tool to install Rust , a programming language that empowers everyone to build reliable and efficient software. What’s new in rustup 1.29.3 This new patch release has fixed some minor regressions over the previous one: Fixed “Illegal instruction” error on certain x86_64 CPUs without SSE4.1. pr#5162 Fixed “ lock() not supported” error on Solaris. pr#5167 Further details are available in the changelog ! How to update If you have a previous version of rustup installed, getting the new one is as easy as stopping any programs which may be using rustup (e.g. closing your IDE) and running: $ rustup self update Rustup will also automatically update itself at the end of a normal toolchain update: $ rustup update For this particular release, if you have encountered any issues during self-update, you may t

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