Wrangler CLI v4 released with latest JavaScript features
Cloudflare released Wrangler v4.0.0, the next major version of the Cloudflare Workers CLI with updates to underlying systems and dependencies plus improvements for consistency and clarity. Wrangler v3 will continue to receive bug fixes and security updates until Q1 2026.
We've released the next major version of Wrangler, the CLI for Cloudflare Workers — wrangler@4.0.0. Wrangler v4 is a major release focused on updates to underlying systems and dependencies, along with improvements to keep Wrangler commands consistent and clear.
You can run the following command to install it in your projects:
npmyarnpnpmbunnpm i wrangler@latestyarn add wrangler@latestpnpm add wrangler@latestbun add wrangler@latestUnlike previous major versions of Wrangler, which were foundational rewrites ↗ and rearchitectures ↗ — Version 4 of Wrangler includes a much smaller set of changes. If you use Wrangler today, your workflow is very unlikely to change.
A detailed migration guide is available and if you find a bug or hit a roadblock when upgrading to Wrangler v4, open an issue on the cloudflare/workers-sdk repository on GitHub ↗.
Going forward, we'll continue supporting Wrangler v3 with bug fixes and security updates until Q1 2026, and with critical security updates until Q1 2027, at which point it will be out of support.
Source: original entry ↗
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