# Deno v2.5.1 — Release & Upgrade Intelligence
- **Product:** Deno (https://deno.com)
- **Version:** v2.5.1
- **Released:** Sep 17, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/deno/updates/v2.5.1/

## Executive Summary (TL;DR)
Deno v2.5.1. Source highlight: feat(unstable): support `Deno.HttpClient` in `WebSocket` (#30692)

## New Features
- feat(unstable): support `Deno.HttpClient` in `WebSocket` (#30692)
- feat(unstable): tcp proxy for `Deno.HttpClient` (#30700)

## Bug Fixes
- fix(bundle): set the type of the outputFile in the deno bundle to `Uint8Array<ArrayBuffer>` (#30716)
- fix(check): filter resolution errors for bare ambient modules (#30690)
- fix(ext/fetch): mark unix and vsock proxy conns as proxy (#30699)
- fix(ext/node): handle falsy values enumerability in process.env (#30708)
- fix(ext/node): implement `fchmod` on windows (#30704)
- fix(ext/node): make `fs.glob` accepts `URL` cwd (#30705)