# Problem with building rust version 1.88

**URL:** <https://forum.codecrafters.io/t/problem-with-building-rust-version-1-88/15383>\
**Category:** General\
**Tags:** challenge:redis\
**Created:** [October 10, 2025, 3:15am UTC](https://forum.codecrafters.io/t/problem-with-building-rust-version-1-88/15383 "2025-10-10T03:15:56Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![andy1li](https://yyz1.discourse-cdn.com/flex003/user_avatar/forum.codecrafters.io/andy1li/32/10_2.png) [@andy1li](https://forum.codecrafters.io/u/andy1li)\
**Post date:** [October 12, 2025, 2:56am UTC](https://forum.codecrafters.io/t/problem-with-building-rust-version-1-88/15383/4 "2025-10-12T02:56:19Z")

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Hey @ctangam, you can try updating the Rust buildpack version for your repo using [the CLI](https://docs.codecrafters.io/cli/installation):

> [@New Feature: Update language version](https://forum.codecrafters.io/t/new-feature-update-language-version/15245):
>
> We’ve rolled out a new feature that lets you update the buildpack language version for your challenge repositories. Until now, repositories were locked to the buildpack version available at the time they were created, which could become outdated over time. With this update, you can switch to a newer version using the CLI: [Upgrade your CLI to the latest version](https://docs.codecrafters.io/cli/update) Run codecrafters update-buildpack Confirm the upgrade if a newer version is available Give it a try, and let us k…

Let me know if it works for you!

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_[View the full topic](https://forum.codecrafters.io/t/problem-with-building-rust-version-1-88/15383)._