# Deno v2.4.5 — Release & Upgrade Intelligence
- **Product:** Deno (https://deno.com)
- **Version:** v2.4.5
- **Released:** Aug 21, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/deno/updates/v2.4.5/

## Executive Summary (TL;DR)
Deno v2.4.5. Source highlight: feat(lsp): pull-based diagnostics (#30325)

## New Features
- feat(lsp): pull-based diagnostics (#30325)
- feat(unstable/install): `DENO_INSTALL_ARCH` env var (#30473)
- feat(unstable/install): more informative deno install output (#30387)

## Improvements
- perf(ext/net): change the default TCP backlog to 512 (#30471)

## Bug Fixes
- fix(bundle): allow json imports without attribute in deno bundle, support
- fix(cache): cache excluded modules explicitly provided on the command line
- fix(ext/node): TLS emit close event on parent socket (#30451)
- fix(ext/node): `os.setPriority` and `os.getPriority` compatibility (#30383)
- fix(ext/node): bad compression caused by invalid brotli params (#30437)
- fix(ext/node): export `promises` from stream (#30427)