# Shopify Functions template and Shopify CLI changes to support Rust 1.84 — Shopify developer changelog
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## Shopify Functions template and Shopify CLI changes to support Rust 1.84

In anticipation of the [removal of the wasm32-wasi build target in Rust 1.84](https://blog.rust-lang.org/2024/04/09/updates-to-rusts-wasi-targets.html), Shopify has updated its Shopify Functions templates for Rust. The `cargo-wasi` utility has been removed because it is incompatible with Rust 1.84 and later versions. 

Additionally, starting with Shopify CLI 3.73, all function builds now include an optimization pass by default. Previously, this optimization was handled by `cargo-wasi`.

Before you update to Rust 1.84, we recommend reviewing and following the [steps outlined here](https://shopify.dev/docs/apps/build/functions/programming-languages/rust-for-functions#updating-to-rust-1-84-and-higher). These changes are compatible with Rust 1.78 and above.

*Published: January 08, 2025*
Tags: Tools, Update
Link: https://shopify.dev/changelog/shopify-functions-template-and-shopify-cli-changes-to-support-rust-184

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