# Deno v1.36.2 — Release & Upgrade Intelligence
- **Product:** Deno (https://deno.com)
- **Version:** v1.36.2
- **Released:** Aug 21, 2023
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/deno/updates/v1.36.2/

## Executive Summary (TL;DR)
Deno v1.36.2. Source highlight: feat(ext/kv): key expiration (#20091)

## New Features
- feat(ext/kv): key expiration (#20091)
- feat(ext/node): eagerly bootstrap node (#20153)
- feat(unstable): Improve FFI types (#20215)

## Improvements
- perf(ext/event): always set timeStamp to 0 (#20191)
- perf(ext/event): optimize Event constructor (#20181)
- perf(ext/event): optimize addEventListener options converter (#20203)
- perf(ext/event): replace ReflectHas with object lookup (#20190)
- perf(ext/headers): cache iterableHeaders for immutable Headers (#20132)
- perf(ext/headers): optimize getHeader using for loop (#20115)

## Bug Fixes
- fix(cli) error gracefully when script arg is not present and `--v8-flags` is
- fix(cli): handle missing `now` field in cache (#20192)
- fix(ext/fetch): clone second branch chunks in Body.clone() (#20057)
- fix(ext/http): ensure request body resource lives as long as response is alive
- fix(ext/kv): retry transaction on `SQLITE_BUSY` errors (#20189)
- fix(ext/net): implement a graceful error on an invalid SSL certificate