# Bun Fast JavaScript Runtime: Bun v1.4.3

> **Key Architectural Takeaway:** To install Bun v1.4.3 curl -fsSL https://bun.sh/install | bash # or you can use npm # npm install -g bun Windows: powershell -c " irm bun.sh/install.ps1|iex " To upgrade to Bun v1.4.3: bun upgrade Read Bun v1.4.3's release notes on Bun's blog Thanks to 8 contributors! @alii @cirospaciari @dylan-conway @eastlondoner @jarred-sumner @robobun @sosukesuzuki @steipete.

**Published:** 2026-10-10T05:28:41+00:00  
**Source:** Bun Fast JavaScript Runtime  
**Category:** software-engineering  
**Canonical URL:** https://fosswire.org/news/bun-fast-javascript-runtime-bun-v143.html  

## Executive Summary
To install Bun v1.4.3 curl -fsSL https://bun.sh/install | bash # or you can use npm # npm install -g bun Windows: powershell -c " irm bun.sh/install.ps1|iex " To upgrade to Bun v1.4.3: bun upgrade Read Bun v1.4.3's release notes on Bun's blog Thanks to 8 contributors! @alii @cirospaciari @dylan-conway @eastlondoner @jarred-sumner @robobun @sosukesuzuki @steipete

## Architectural & Systems Analysis
From a software architecture and open governance standpoint:

- **Standardized Protocols:** Adopting open interfaces eliminates walled-garden lock-in and fosters interoperability.
- **Zero-Trust Auditability:** Independent peer inspection replaces commercial blind trust.
- **Sustainable Maintenance:** Reduces maintenance friction through transparent issue triaging and automated continuous verification.

## Impact on the Open Ecosystem
Reinforces the principle that foundational software utilities belong to the public engineering commons.