# Bun bun-v0.1.9 — Release & Upgrade Intelligence
- **Product:** Bun (https://bun.sh)
- **Version:** bun-v0.1.9
- **Released:** Aug 18, 2022
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/bun/updates/bun-v0.1.9/

## Executive Summary (TL;DR)
Bun bun-v0.1.9. Source highlight: curl https://bun.sh/install | bash

## New Features
- Add synthetic buffer module
- Add native process module

## Improvements
- [Linux] Improved event loop reliability and reduced CPU usage for concurrent/async IO (affects `bun install` and `fetch()` mostly)
- Improve event loop reliability on Linux

## Bug Fixes
- Numerous crashes fixed by @zhuzilin!! Incredible work.
- Fixed a bug that would cause `setTimeout` or `setInterval` to not keep the process alive (thanks @zhuzilin)
- fix MD5 length and compile error
- fix appendFile permission
- [bun error] fix typo in markdown.ts
- Fix active_task count for timeout tasks