# Deno v1.37.0 — Release & Upgrade Intelligence
- **Product:** Deno (https://deno.com)
- **Version:** v1.37.0
- **Released:** Sep 19, 2023
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/deno/updates/v1.37.0/

## Executive Summary (TL;DR)
Deno v1.37.0. Source highlight: feat: Add "deno jupyter" subcommand (#20337, #20552, #20530, #20537, #20546)

## New Features
- feat: Add "deno jupyter" subcommand (#20337, #20552, #20530, #20537, #20546)
- feat(test): add TAP test reporter (#14390, #20073)
- feat(ext/node): http2.connect() API (#19671)
- feat(ext/web): Add name to `Deno.customInspect` of File objects (#20415)
- feat(lint): `--rules` print all rules (#20256)
- feat(lockfile): add redirects to the lockfile (#20262)

## Improvements
- perf(ext/http): optimize `set_response` for small responses (#20527)
- perf(ext/node): Optimise Buffer string operations (#20158)
- perf(ext/streams): optimize async iterator (#20541)
- perf(node/net): optimize socket reads for 'npm:ws' package (#20449)
- perf: improve async op santizer speed and accuracy (#20501)
- perf: make `deno test` 10x faster (#20550)

## Bug Fixes
- fix(cli): ensure that an exception in getOwnPropertyDescriptor('constructor')
- fix(cli): for main-module that exists in package.json, use the version defined
- fix(compile): support providing flags as args (#20422)
- fix(evt/kv): Add serde feature to uuid (#20350)
- fix(ext/crypto): remove EdDSA alg key checks and export (#20331)
- fix(ext/http): create a graceful shutdown API (#20387)