Agent Breaking Changes_

← OpenCode

OpenCode v1.19.4

security

2026-10-22 · official notes

Summary

Full notes

## Core

### Improvements
- Upgraded the bundled Bun runtime to 1.4.4, which includes [security fixes](https://bun.com/blog/bun-v1.4.4#security) for Brotli, TLS, HTTP/1.1, HTTP/2, HTTP/3, WebSocket, and `fetch`, and updates root certificates to NSS 3.131.1.
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