# Bun bun-v1.4.2 — Bun v1.4.2

- Product: Bun (https://whatsnew.fyi/product/bun)
- Vendor: Oven
- Date: 2026-09-05
- Version: bun-v1.4.2
- Original notes: https://github.com/oven-sh/bun/releases/tag/bun-v1.4.2
- Permalink: https://whatsnew.fyi/product/bun/releases/bun-v1.4.2

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

---

To install Bun v1.4.2
```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 v1.4.2:
```bash
bun upgrade
```

###### [Read Bun v1.4.2's release notes on Bun's blog](https://bun.sh/blog/bun-v1.4.2)

###### Thanks to 3 contributors!

- [@dylan-conway](https://github.com/dylan-conway)
- [@jarred-sumner](https://github.com/jarred-sumner)
- [@robobun](https://github.com/robobun)