Releasesby GlyphBun v1.3.6
Fixes 45 issues (addressing 125 👍). Bun.Archive API for creating & extracting tarballs with gzip compression, Bun.JSONC for parsing JSON with comments, metafile & files options in Bun.build for bundle analysis and virtual files, Response.json() 3.5x faster, 15% faster async/await, 30% faster Promise.race, 20x faster Bun.hash.crc32, faster...
Also shipped Jan 13, 2026Bun in January 2026 →
Cloudflare One Client - WARP client for Windows (version 2025.10.186.0)
A new GA release for the Windows WARP client is now available on the stable releases downloads page . This release contains minor fixes, improvements, and new features. New features include the ability to manage WARP client connectivity for all devices in your fleet using an external signal , and a new WARP client device posture check for Antivirus .
Cloudflare One Client - WARP client for macOS (version 2025.10.186.0)
A new GA release for the macOS WARP client is now available on the stable releases downloads page . This release contains minor fixes, improvements, and new features, including the ability to manage WARP client connectivity for all devices in your fleet using an external signal .
Cloudflare One Client - WARP client for Linux (version 2025.10.186.0)
A new GA release for the Linux WARP client is now available on the stable releases downloads page . This release contains minor fixes, improvements, and new features, including the ability to manage WARP client connectivity for all devices in your fleet using an external signal .
Dataflow now serves a notice for when the Dataflow Runner v2 container image of a streaming pipeline will be...
Dataflow now serves a notice for when the Dataflow Runner v2 container image of a streaming pipeline will be upgraded. To use a new image and avoid the scheduled maintenance, launch a replacement job before the upgrade. For more information, see Runner v2 harness update .
Flux: WebM Container Support Added
Flux now supports the WebM container format with Opus codec, providing seamless compatibility with audio sources that output WebM-formatted audio streams.
WebM Container Support
Flux now accepts WebM containers with Opus codec encoding: WebM containers with opus encoding When sending WebM containerized audio, omit the encoding and sample_rate parameters, Flux will automatically detect these from the container metadata.
More from BunEvery Bun release →
Bun v1.3.7
Fixes 91 issues (addressing 243 👍). 50% faster `Buffer.from(array)`, 35% faster async/await, 3x faster `array.flat()`, 90% faster `padStart`/`padEnd` via JSC upgrade. New: `Bun.JSON5`, `Bun.JSONL`, `Bun.wrapAnsi()` (33-88x faster than wrap-ansi npm), `--heap-prof-md`, `--cpu-prof-md`, `node:inspector` Profiler API, `replMode` for `Bun.Transpiler`.
Bun v1.3.8
Fixes 8 issues (addressing 6 👍). Bun.markdown is a builtin CommonMark-compliant Markdown parser written in Zig. Bun's bundler gets bun build --metafile-md to write LLM-friendly module graph metadata. Fixes a regression in 'npm install -g bun' on Windows.
Bun v1.3.9
Fixes 23 issues (addressing 13 👍). Run multiple scripts in --parallel or --sequential. bun:test mock & spyOn get Symbol.dispose support. ESM bytecode compilation. Faster Bun.markdown. Faster RegExp, String.prototype.trim, String.prototype.startsWith.
Bun v1.3.5
Fixes 32 issues (addressing 25 👍). Bun.Terminal API, compile-time feature flags, improved Bun.stringWidth accuracy, V8 C++ value type checking APIs, Content-Disposition support for S3 uploads, environment variable expansion in .npmrc quoted values, and numerous bug fixes & node.js compatibility improvements
Bun v1.3.4
Fixes 194 issues (addressing 412 👍). URLPattern API, Fake Timers for bun:test, Custom Proxy Headers in fetch(),console.log %j format, http.Agent connection pooling fix, Standalone executable config loading changes, SQLite 3.51.1, and numerous bugfixes for bun:test, Node.js compatibility, Windows, Web APIs, bun install, and more
Bun is joining Anthropic
Bun has been acquired by Anthropic. Anthropic is betting on Bun as the infrastructure powering Claude Code, Claude Agent SDK, and future AI coding products & tools.
Bun v1.3.10
Fixes 155 issues (addressing 642 👍). New native REPL, --compile --target=browser for self-contained HTML, TC39 standard ES decorators, Windows ARM64 support, barrel import optimization, and a faster event loop.
Bun v1.3.3
Fixes 95 issues (addressing 348 👍). CompressionStream and DecompressionStream, Control .env and bunfig.toml loading in standalone executables, `retry` and `repeats` in `bun:test`, --no-env-file, SQLite 3.51.0, Upgraded to Zig 0.15.2, Bugfixes for bundler, bun install, Windows, Node.js compatibility, Web APIs, Bun.serve, networking, Bun.YAML...