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Incredibly fast JavaScript runtime, bundler, test runner, and package manager – all in one

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Bun bun-v1.3.9

Bun: bun-v1.3.9 Release

Release date:

February 7, 2026

Previous version:

bun-v1.3.8 (released January 29, 2026)

Magnitude:

3,173 Diff Delta

Contributors:

5 total committers

Data confidence:

Commits:

34 Features Released with bun-v1.3.9

← Previous 1 2 Next →

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Top Contributors in bun-v1.3.9

Jarred-Sumner

sosukesuzuki

robobun

chrislloyd

alii

Directory Browser for bun-v1.3.9

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Release Notes Published

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