# Bun 1.4 Release Brings Updates to JavaScript Runtime

Bun, the fast JavaScript runtime, has released version 1.4. The update includes performance improvements and new features for developers. This matters for JavaScript developers seeking faster build tools and runtime efficiency.

**Importance:** 3/5

## Sources

### Technology
- [Hacker News](https://bun.com/blog/bun-v1.4) — Thu, 20 Aug 2026 14:10:12 +0000