bun-v1.3.9

oven-sh/bunbun-v1.3.9Feb 8, 2026by Jarred-Sumner

AI Summary

Bun v1.3.9 updates the runtime with bug fixes and minor enhancements. The complete list of changes can be found on the official Bun blog.

Key Highlights

Patch release
Contributions from 10 developers
Link to detailed blog post
Installation instructions provided

Full Release Notes

To install Bun v1.3.9
```bash
curl -fsSL https://bun.sh/install | bash
# or you can use npm
# npm install -g bun
```

Windows:
```bash
powershell -c "irm bun.sh/install.ps1|iex"
```

To upgrade to Bun v1.3.9:
```bash
bun upgrade
```

### [Read Bun v1.3.9's release notes on Bun's blog](https://bun.sh/blog/bun-v1.3.9)

### Thanks to 10 contributors!

- [@alii](https://github.com/alii)
- [@billywhizz](https://github.com/billywhizz)
- [@chrislloyd](https://github.com/chrislloyd)
- [@cirospaciari](https://github.com/cirospaciari)
- [@ddmoney420](https://github.com/ddmoney420)
- [@dylan-conway](https://github.com/dylan-conway)
- [@jarred-sumner](https://github.com/jarred-sumner)
- [@robobun](https://github.com/robobun)
- [@sosukesuzuki](https://github.com/sosukesuzuki)
- [@xingxingmofashu](https://github.com/xingxingmofashu)