# Bun bun-v0.6.4 — Release & Upgrade Intelligence
- **Product:** Bun (https://bun.sh)
- **Version:** bun-v0.6.4
- **Released:** May 27, 2023
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/bun/updates/bun-v0.6.4/

## Executive Summary (TL;DR)
Bun bun-v0.6.4. Source highlight: **Read Bun v0.6.4's release notes on Bun's blog**

## New Features
- Add pkg-config as a build requirement
- [bun:FileSystemRouter] add more validations on parameters
- docs: add a bit more info on Elysia

## Bug Fixes
- [node:http] Fix return type for `getHeader()`
- [node:tls] fix marking requestCert on `tls` module
- Fix `Bun.connect()` types
- fix extra/ArbitraryModuleNamespaceIdentifiers2
- [bun:test] Fix async/done-based test.todo
- Fix incorrect URL in loaders.md