npm · #1828 most downloaded on npm

@cloudflare/workerd-linux-64

1.20261004.1cloudflare/workerd ↗New releases in your daily digest, changelog included.

👷 workerd for Linux 64-bit, Cloudflare's JavaScript/Wasm Runtime

Last release today
04 Oct 2026
Ships on a steady schedule
a new release about every 8 days
Nearly every release is documented
notes for 60 of the last 60 stable releases
Nothing withdrawn
no release was ever pulled
4 years old
565 releases · first in 2022

Release timeline

565 releases since 2022

20222023202420252026

20222026

One column per quarter.

Releases

1.20251210.010 Dec 2025
Bump urllib3 from 2.3.0 to 2.6.0 in /src/pyodide/internal/sphinx by @dependabot[bot] in https://github.com/cloudflare/workerd/pull/5651
What's Changed

Bump urllib3 from 2.3.0 to 2.6.0 in /src/pyodide/internal/sphinx by @dependabot[bot] in https://github.com/cloudflare/workerd/pull/5651

Update V8 to 14.3.127.16. by @jp4a50 in https://github.com/cloudflare/workerd/pull/5664

Revert SQLITE upgrade back to 3.47 by @zachlefevre in https://github.com/cloudflare/workerd/pull/5667

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251209.0...v1.20251210.0
Open source →
1.20251209.09 Dec 2025
Update dependencies by @workers-devprod in https://github.com/cloudflare/workerd/pull/5654
What's Changed

Update dependencies by @workers-devprod in https://github.com/cloudflare/workerd/pull/5654

Use ReverseIoOwn in makeReentryCallback(). by @kentonv in https://github.com/cloudflare/workerd/pull/5655

Add workerdDebugPort binding for dynamic worker access by @danlapid in https://github.com/cloudflare/workerd/pull/5652

Mark span time adjustment warning as nosentry. by @mar-cf in https://github.com/cloudflare/workerd/pull/5657

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251206.0...v1.20251209.0

1.20251205.05 Dec 2025Deprecated

update workerd-cxx to get rid of deprecated methods by @anonrig in https://github.com/cloudflare/workerd/pull/5646

What's Changed

Increment alarmVersion more selectively by @MellowYarker in https://github.com/cloudflare/workerd/pull/5639
feat: Add WorkflowStepContext to step.do callback by @pombosilva in https://github.com/cloudflare/workerd/pull/5625
Fix unfulfilled promise error when CustomEvent is destroyed early by @mar-cf in https://github.com/cloudflare/workerd/pull/5640
Revert "feat: Add WorkflowStepContext to step.do callback" by @avenceslau in https://github.com/cloudflare/workerd/pull/5642
Revert "Add initial Rust JSG integration with error support" by @anonrig in https://github.com/cloudflare/workerd/pull/5643
add asan-release builds by @anonrig in https://github.com/cloudflare/workerd/pull/5644
update workerd-cxx to get rid of deprecated methods by @anonrig in https://github.com/cloudflare/workerd/pull/5646

New Contributors

@avenceslau made their first contribution in https://github.com/cloudflare/workerd/pull/5642

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251204.0...v1.20251205.0

Open source →

1.20251202.02 Dec 2025

Update dependencies by @workers-devprod in https://github.com/cloudflare/workerd/pull/5613

What's Changed

Update dependencies by @workers-devprod in https://github.com/cloudflare/workerd/pull/5613
Improve node:vm implementation to avoid unnecessary throws by @petebacondarwin in https://github.com/cloudflare/workerd/pull/5606
Implement noop versions of the undocumented Console handler callbacks by @petebacondarwin in https://github.com/cloudflare/workerd/pull/5610
make env&exports enumerable by @anonrig in https://github.com/cloudflare/workerd/pull/5608
Try to fix macOS CI: Revert "[ci] Update to macOS 26" by @fhanau in https://github.com/cloudflare/workerd/pull/5600
fix encoding web-platform tests by @anonrig in https://github.com/cloudflare/workerd/pull/5616
Add MemoryProtectionKeyScope by @jasnell in https://github.com/cloudflare/workerd/pull/5167
Reworking Headers impl by @jasnell in https://github.com/cloudflare/workerd/pull/5396

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251129.0...v1.20251202.0

Open source →

1.20251128.028 Nov 2025

Simplify some TypeWrapper mixins by removing the template params by @jasnell in https://github.com/cloudflare/workerd/pull/5597

What's Changed

Simplify some TypeWrapper mixins by removing the template params by @jasnell in https://github.com/cloudflare/workerd/pull/5597
Don't schedule a move-later alarm if an interleaving commit setAlarm() by @MellowYarker in https://github.com/cloudflare/workerd/pull/5589
Handle ArrayBufferView type parameters in Python Response by @ryanking13 in https://github.com/cloudflare/workerd/pull/5585
[nfc] Detemplatize JSG API somewhat, improving code size by @fhanau in https://github.com/cloudflare/workerd/pull/5599
Consolidate fast api config into JsgConfig by @jasnell in https://github.com/cloudflare/workerd/pull/5598
Update process.report.getReport to not throw by @jasnell in https://github.com/cloudflare/workerd/pull/5604
JsValueWrapper does not need to be a template by @jasnell in https://github.com/cloudflare/workerd/pull/5605

New Contributors

@ryanking13 made their first contribution in https://github.com/cloudflare/workerd/pull/5585

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251127.0...v1.20251128.0

Open source →

1.20251127.027 Nov 2025

fix: Workflows InstanceStatus with the right types by @pombosilva in https://github.com/cloudflare/workerd/pull/5575

What's Changed

fix: Workflows InstanceStatus with the right types by @pombosilva in https://github.com/cloudflare/workerd/pull/5575
Adds support for bytes passed to Python's Response constructor by @dom96 in https://github.com/cloudflare/workerd/pull/5547
Upgrade sqlite to 3.51 by @zachlefevre in https://github.com/cloudflare/workerd/pull/5553
Add impliedByAfterDate for python_check_rng_state by @hoodmane in https://github.com/cloudflare/workerd/pull/5588
Simplify some template uses in jsg by @jasnell in https://github.com/cloudflare/workerd/pull/5595
Remove some dead code by @jasnell in https://github.com/cloudflare/workerd/pull/5594

New Contributors

@pombosilva made their first contribution in https://github.com/cloudflare/workerd/pull/5575

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251126.0...v1.20251127.0

Open source →

1.20251125.025 Nov 2025

[o11y] Clean up remaining setTag() string allocations by @fhanau in https://github.com/cloudflare/workerd/pull/5569

What's Changed

[o11y] Clean up remaining setTag() string allocations by @fhanau in https://github.com/cloudflare/workerd/pull/5569
[nfc] Clean up more string allocations by @fhanau in https://github.com/cloudflare/workerd/pull/5572
Update dependencies by @workers-devprod in https://github.com/cloudflare/workerd/pull/5578
[nfc] Clean up io includes by @fhanau in https://github.com/cloudflare/workerd/pull/5573
feat(types): allow cmd-click into rpc props by @mmkal in https://github.com/cloudflare/workerd/pull/4401
[Instrumentation] Improve spans for cache by @jmorrell-cloudflare in https://github.com/cloudflare/workerd/pull/5399
Handle CPU limit exceeded in Python workers by @hoodmane in https://github.com/cloudflare/workerd/pull/5543

New Contributors

@mmkal made their first contribution in https://github.com/cloudflare/workerd/pull/4401

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251123.0...v1.20251125.0

Open source →

1.20251121.021 Nov 2025

Only print debug log if an alarm is being set by @MellowYarker in https://github.com/cloudflare/workerd/pull/5558

What's Changed

Only print debug log if an alarm is being set by @MellowYarker in https://github.com/cloudflare/workerd/pull/5558
[ci] Further attempt to fix macOS CI by reducing Bazel parallelism by @fhanau in https://github.com/cloudflare/workerd/pull/5559
[o11y] Obsolete the STW compat flag by @fhanau in https://github.com/cloudflare/workerd/pull/5552
benchmarks: add support for capnp benchmarks by @mikea in https://github.com/cloudflare/workerd/pull/5539

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251120.0...v1.20251121.0

Open source →

1.20251120.020 Nov 2025

adjust fetch memory usage by @mikea in https://github.com/cloudflare/workerd/pull/5550

What's Changed

adjust fetch memory usage by @mikea in https://github.com/cloudflare/workerd/pull/5550
[nfc] Clean up string allocations by @fhanau in https://github.com/cloudflare/workerd/pull/5544
[o11y] Make STW unused tracer warning log periodically for now by @fhanau in https://github.com/cloudflare/workerd/pull/5529
Improve bounds check in ring buffer back() by @jasnell in https://github.com/cloudflare/workerd/pull/5556
add nullable support to env/exports by @anonrig in https://github.com/cloudflare/workerd/pull/5545

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251119.0...v1.20251120.0

Open source →

1.20251119.019 Nov 2025

add importable exports to cloudflare module by @anonrig in https://github.com/cloudflare/workerd/pull/5516

What's Changed

add importable exports to cloudflare module by @anonrig in https://github.com/cloudflare/workerd/pull/5516
Address and enhance small issues around dev tooling by @anonrig in https://github.com/cloudflare/workerd/pull/5540
[ci] Disable async remote cache fetching on macOS to speculatively fix CI freezes by @fhanau in https://github.com/cloudflare/workerd/pull/5548
Add logs to try and debug weird alarm behavior for internal account by @MellowYarker in https://github.com/cloudflare/workerd/pull/5546
Revert "Set job timeouts in Github Actions" by @npaun in https://github.com/cloudflare/workerd/pull/5551
update simdutf to v7.6.0 by @anonrig in https://github.com/cloudflare/workerd/pull/5549

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251118.0...v1.20251119.0

Open source →

1.20251118.018 Nov 2025

Add email method to WorkerEntrypoint types by @jamesopstad in https://github.com/cloudflare/workerd/pull/5538

What's Changed

Add email method to WorkerEntrypoint types by @jamesopstad in https://github.com/cloudflare/workerd/pull/5538
update codspeed to v1.4.1 by @anonrig in https://github.com/cloudflare/workerd/pull/5541

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251117.0...v1.20251118.0

Open source →

1.20251117.017 Nov 2025

Update dependencies by @workers-devprod in https://github.com/cloudflare/workerd/pull/5536

What's Changed

Update dependencies by @workers-devprod in https://github.com/cloudflare/workerd/pull/5536
[build] Update to Bazel 8.5.0, improve Bazel 9 forward compatibility by @fhanau in https://github.com/cloudflare/workerd/pull/5535

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251116.0...v1.20251117.0

Open source →

1.20251115.015 Nov 2025

Added types for conversion options in ToMarkdown by @Naapperas in https://github.com/cloudflare/workerd/pull/5481

What's Changed

Added types for conversion options in ToMarkdown by @Naapperas in https://github.com/cloudflare/workerd/pull/5481
Ensure iterator snapshots when iterating over consumers by @jasnell in https://github.com/cloudflare/workerd/pull/5521
Add default enable date for fastJsgStruct by @jasnell in https://github.com/cloudflare/workerd/pull/5530
Implements py test for fastapi with dedicated snapshot by @dom96 in https://github.com/cloudflare/workerd/pull/5523
Set job timeouts in Github Actions by @npaun in https://github.com/cloudflare/workerd/pull/5526
Add compat flag to mark jsg::Object prototypes immutable by @jasnell in https://github.com/cloudflare/workerd/pull/5522
Make IoContext tmpDirStoreScope lazy-initialized by @jasnell in https://github.com/cloudflare/workerd/pull/5533

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251114.0...v1.20251115.0

Open source →

1.20251113.013 Nov 2025

chore: skip the flaky workers-sdk ConfigController tests by @dario-piotrowicz in https://github.com/cloudflare/workerd/pull/5509

What's Changed

chore: skip the flaky workers-sdk ConfigController tests by @dario-piotrowicz in https://github.com/cloudflare/workerd/pull/5509
Create and hold UserRequestSpan inside IoContext::IncomingRequest. by @kentonv in https://github.com/cloudflare/workerd/pull/5510
Update dependencies by @workers-devprod in https://github.com/cloudflare/workerd/pull/5500
Add user tracing tags to internal tracing by @danlapid in https://github.com/cloudflare/workerd/pull/5508
Fix missing return statement. by @kentonv in https://github.com/cloudflare/workerd/pull/5514
avoid using fixed clangd path by @anonrig in https://github.com/cloudflare/workerd/pull/5515
fix missing error message for jsg.Error by @mschwarzl in https://github.com/cloudflare/workerd/pull/5502

New Contributors

@dario-piotrowicz made their first contribution in https://github.com/cloudflare/workerd/pull/5509

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251112.0...v1.20251113.0

Open source →

1.20251111.011 Nov 2025

[o11y] Fix STW Outcome event not being reported if outcome code is unknown by @fhanau in https://github.com/cloudflare/workerd/pull/5486

What's Changed

[o11y] Fix STW Outcome event not being reported if outcome code is unknown by @fhanau in https://github.com/cloudflare/workerd/pull/5486
Remove defaultOnDate for streamsNodejsV24Compat by @danlapid in https://github.com/cloudflare/workerd/pull/5488
Prevent alarm update races with promise chain serialization by @MellowYarker in https://github.com/cloudflare/workerd/pull/5431
[build] Modularize io target by @fhanau in https://github.com/cloudflare/workerd/pull/5482
Additional updates to new streams adapters by @jasnell in https://github.com/cloudflare/workerd/pull/5430
Update dependencies by @workers-devprod in https://github.com/cloudflare/workerd/pull/5490
Rust 1.91 by @npaun in https://github.com/cloudflare/workerd/pull/5480

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251109.0...v1.20251111.0

Open source →

1.20251107.07 Nov 2025

use shared buffer for retrieving random bytes by @anonrig in https://github.com/cloudflare/workerd/pull/5444

What's Changed

use shared buffer for retrieving random bytes by @anonrig in https://github.com/cloudflare/workerd/pull/5444
Move bazelproject to CLion's preferred location by @ujohnny in https://github.com/cloudflare/workerd/pull/5463
Small tweaks to FormData boundary generation by @jasnell in https://github.com/cloudflare/workerd/pull/5469
Set error tag by @danlapid in https://github.com/cloudflare/workerd/pull/5471
Only store status text if necessary by @jasnell in https://github.com/cloudflare/workerd/pull/5470
smaller exceptions by @mikea in https://github.com/cloudflare/workerd/pull/5464
Support boringssl EVP_AEAD interface by @npaun in https://github.com/cloudflare/workerd/pull/5202
Add v8::String::IsFlat API by @jasnell in https://github.com/cloudflare/workerd/pull/5474

New Contributors

@ujohnny made their first contribution in https://github.com/cloudflare/workerd/pull/5463

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251106.1...v1.20251107.0

Open source →

1.20251106.16 Nov 2025

Revert unwanted changes to trace_events by @vicb in https://github.com/cloudflare/workerd/pull/5467

What's Changed

Revert unwanted changes to trace_events by @vicb in https://github.com/cloudflare/workerd/pull/5467
ci: ensure the workers-types release uses the correct npm version for… by @petebacondarwin in https://github.com/cloudflare/workerd/pull/5468

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251106.0...v1.20251106.1

Open source →

1.20251106.06 Nov 2025

EW-9182 Add assertion to detect timeout ID generator mismatches by @harrishancock in https://github.com/cloudflare/workerd/pull/3867

What's Changed

EW-9182 Add assertion to detect timeout ID generator mismatches by @harrishancock in https://github.com/cloudflare/workerd/pull/3867
feat: Add hard timeout support to container startup by @Talador12 in https://github.com/cloudflare/workerd/pull/5280
Float the WriteUtf8V2 patch by @jasnell in https://github.com/cloudflare/workerd/pull/5465
[build] Implement a couple more clang-tidy checks by @fhanau in https://github.com/cloudflare/workerd/pull/5466

New Contributors

@Talador12 made their first contribution in https://github.com/cloudflare/workerd/pull/5280

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251105.0...v1.20251106.0

Open source →

1.20251105.05 Nov 2025

fix trace_events Node.js compatibility problems by @petebacondarwin in https://github.com/cloudflare/workerd/pull/5456

What's Changed

fix trace_events Node.js compatibility problems by @petebacondarwin in https://github.com/cloudflare/workerd/pull/5456
Add startup exceptions to traces by @danlapid in https://github.com/cloudflare/workerd/pull/5453
clang-tidy: google-readability-casting, modernize-use-using by @npaun in https://github.com/cloudflare/workerd/pull/5423
Fix double setting error.type tag. by @mar-cf in https://github.com/cloudflare/workerd/pull/5459
Add WASM module support to worker-loader by @danlapid in https://github.com/cloudflare/workerd/pull/5462
Reprl for Fuzzilli fuzzing by @mschwarzl in https://github.com/cloudflare/workerd/pull/4917
Fix #include in the middle of the file. by @kentonv in https://github.com/cloudflare/workerd/pull/5458
Add user exception metadata to internal exception by @danlapid in https://github.com/cloudflare/workerd/pull/5454

New Contributors

@mschwarzl made their first contribution in https://github.com/cloudflare/workerd/pull/4917

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251104.0...v1.20251105.0

Open source →

1.20251104.04 Nov 2025

make Immediate class thread-safe by @anonrig in https://github.com/cloudflare/workerd/pull/5207

What's Changed

make Immediate class thread-safe by @anonrig in https://github.com/cloudflare/workerd/pull/5207
Update dependencies by @workers-devprod in https://github.com/cloudflare/workerd/pull/5451
Fix R2 tracing to use unique tags for each checksum type instead of overwriting shared tags by @mar-cf in https://github.com/cloudflare/workerd/pull/5252
[o11y] Elide span tag string allocations for string literals/when not being traced by @fhanau in https://github.com/cloudflare/workerd/pull/5435
Enable ctx.exports by default at compat date 2025-11-17. by @kentonv in https://github.com/cloudflare/workerd/pull/5455

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251101.0...v1.20251104.0

Open source →

1.20251101.01 Nov 2025

Add tailStream method to rpc.d.ts by @penalosa in https://github.com/cloudflare/workerd/pull/5447

What's Changed

Add tailStream method to rpc.d.ts by @penalosa in https://github.com/cloudflare/workerd/pull/5447
Avoid unnecessary string allocations/copies in events by @jasnell in https://github.com/cloudflare/workerd/pull/5446

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251031.0...v1.20251101.0

Open source →

1.20251031.031 Oct 2025

Minor improvements to MimeType by @jasnell in https://github.com/cloudflare/workerd/pull/5437

What's Changed

Minor improvements to MimeType by @jasnell in https://github.com/cloudflare/workerd/pull/5437
Revert "Merge pull request #5428 from cloudflare/jasnell/replace-body… by @harrishancock in https://github.com/cloudflare/workerd/pull/5439
Lazily generate InvocationSpanContext in IoContext by @jasnell in https://github.com/cloudflare/workerd/pull/5441
EW-9632 Remove websocket-max-message-size-32m autogate by @harrishancock in https://github.com/cloudflare/workerd/pull/5440

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251030.0...v1.20251031.0

Open source →

1.20251029.029 Oct 2025

[build] Expand clang-tidy, clang-format coverage by @fhanau in https://github.com/cloudflare/workerd/pull/5415

What's Changed

[build] Expand clang-tidy, clang-format coverage by @fhanau in https://github.com/cloudflare/workerd/pull/5415
cleanup bazel deps/implementation_deps by @anonrig in https://github.com/cloudflare/workerd/pull/5418
Improve implementation of jsg::Generator/AsyncGenerator by @jasnell in https://github.com/cloudflare/workerd/pull/5417
[build] Fix macOS-cross build by @fhanau in https://github.com/cloudflare/workerd/pull/5420
Upgrade error for invalid deferDestruction queue state. by @mar-cf in https://github.com/cloudflare/workerd/pull/5421
Add snake case signatures for workflow binding methods by @Caio-Nogueira in https://github.com/cloudflare/workerd/pull/5398
Fill in some more JsValue implmentation bits by @jasnell in https://github.com/cloudflare/workerd/pull/5424

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251027.0...v1.20251029.0

Open source →

1.20251024.024 Oct 2025

EW-9632 Increase max WebSocket message size limit to 32MiB by @harrishancock in https://github.com/cloudflare/workerd/pull/5362

What's Changed

EW-9632 Increase max WebSocket message size limit to 32MiB by @harrishancock in https://github.com/cloudflare/workerd/pull/5362
Lower bench-text-encoder iterations to more reasonable numbers by @jasnell in https://github.com/cloudflare/workerd/pull/5397
Avoid creating unnecessary ReadableStream on every request by @jasnell in https://github.com/cloudflare/workerd/pull/5402
Inline multiple JsValue APIs by @jasnell in https://github.com/cloudflare/workerd/pull/5400
Add entropysource to newInternalHttpClient so websockets work, and fi… by @tewaro in https://github.com/cloudflare/workerd/pull/5403

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251023.0...v1.20251024.0

Open source →

1.20251023.023 Oct 2025

separate streams implementations for maintenance by @anonrig in https://github.com/cloudflare/workerd/pull/5364

What's Changed

separate streams implementations for maintenance by @anonrig in https://github.com/cloudflare/workerd/pull/5364
Implements shapely vendored test for Python Workers by @dom96 in https://github.com/cloudflare/workerd/pull/5365
[Instrumentation] Add spans for Images Binding by @jmorrell-cloudflare in https://github.com/cloudflare/workerd/pull/5236
[Instrumentation] Add D1 spans by @jmorrell-cloudflare in https://github.com/cloudflare/workerd/pull/5218
Add reranking controls to AutoRAG binding search methods by @Naapperas in https://github.com/cloudflare/workerd/pull/5295
use jsg::Lock methods more by @anonrig in https://github.com/cloudflare/workerd/pull/5368
improve text-encoder benchmark by @anonrig in https://github.com/cloudflare/workerd/pull/5374
Perf improvements for TextEncoder::encodeInto by @jasnell in https://github.com/cloudflare/workerd/pull/5372
containers: move out of experimental the setInactivityTimout method by @gabivlj in https://github.com/cloudflare/workerd/pull/5353
revert recent changes by @mikea in https://github.com/cloudflare/workerd/pull/5376
add benchmarks for Response by @anonrig in https://github.com/cloudflare/workerd/pull/5369

New Contributors

@Naapperas made their first contribution in https://github.com/cloudflare/workerd/pull/5295

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251022.0...v1.20251023.0

Open source →

1.20251022.022 Oct 2025

Normalise path before passing to loadDynlib in Python Workers. by @dom96 in https://github.com/cloudflare/workerd/pull/5348

What's Changed

Normalise path before passing to loadDynlib in Python Workers. by @dom96 in https://github.com/cloudflare/workerd/pull/5348
VS-461: Fix Vectorize Metadata filter type definitions by @nagraham in https://github.com/cloudflare/workerd/pull/5307
Remove backpressure debug warning by @jasnell in https://github.com/cloudflare/workerd/pull/5356
speedup clion bazel experience by @anonrig in https://github.com/cloudflare/workerd/pull/5347
WO-750 Add tracing infrastructure for bindings by @m-makuch in https://github.com/cloudflare/workerd/pull/5094
Python: Fail loading dynamic library if table base doesn't match by @hoodmane in https://github.com/cloudflare/workerd/pull/5349
Refactor SqliteKv’s multi-put to silence an errant clang-tidy lint by @justin-mp in https://github.com/cloudflare/workerd/pull/5363
chore(deps): move ada-url and brotli to bzlmod by @alexeagle in https://github.com/cloudflare/workerd/pull/5355
Python: Temporarily disable scipy-vendor-test by @hoodmane in https://github.com/cloudflare/workerd/pull/5371
containers: Keep doing exclusive join just in case the service request does not exit by @gabivlj in https://github.com/cloudflare/workerd/pull/5367
Python: In 0.28.2 tests, use stacked snapshot by default by @hoodmane in https://github.com/cloudflare/workerd/pull/5350
Rename PythonRuntimeError to PythonInternalError by @hoodmane in https://github.com/cloudflare/workerd/pull/5351
Add cache: reload as experimental by @tewaro in https://github.com/cloudflare/workerd/pull/4875

New Contributors

@nagraham made their first contribution in https://github.com/cloudflare/workerd/pull/5307

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251021.0...v1.20251022.0

Open source →

1.20251021.021 Oct 2025

Implement SmallSet to optimize ReadableStream tee handling by @jasnell in https://github.com/cloudflare/workerd/pull/5337

What's Changed

Implement SmallSet to optimize ReadableStream tee handling by @jasnell in https://github.com/cloudflare/workerd/pull/5337
Update dependencies by @workers-devprod in https://github.com/cloudflare/workerd/pull/5338
Python: Refactor preloadDynamicLibs to improve readability by @hoodmane in https://github.com/cloudflare/workerd/pull/5340
Implement JSG_STRUCT DictionaryTemplates by @jasnell in https://github.com/cloudflare/workerd/pull/5339
[build] Update lol-html, bzlmod deps by @fhanau in https://github.com/cloudflare/workerd/pull/5354
[rust] use 1.90.0 by @mikea in https://github.com/cloudflare/workerd/pull/5276
[nfc] update rust deps by @mikea in https://github.com/cloudflare/workerd/pull/5358

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251020.0...v1.20251021.0

Open source →

1.20251020.020 Oct 2025

EW-9332 Update V8 14.1 -> 14.2 by @harrishancock in https://github.com/cloudflare/workerd/pull/5333

What's Changed

EW-9332 Update V8 14.1 -> 14.2 by @harrishancock in https://github.com/cloudflare/workerd/pull/5333
10-08-25 build maintenance by @fhanau in https://github.com/cloudflare/workerd/pull/5272
add minimumReleaseAge to pnpm by @anonrig in https://github.com/cloudflare/workerd/pull/5336
fix warnings caused by codspeed by @anonrig in https://github.com/cloudflare/workerd/pull/5344
[build] Reduce CI remote cache fetch parallelism to debug CI freezes by @fhanau in https://github.com/cloudflare/workerd/pull/5345

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251019.0...v1.20251020.0

Open source →

1.20251014.020 Oct 2025Deprecated

EW-9332 Update deprecated V8 function usage by @harrishancock in https://github.com/cloudflare/workerd/pull/5274

What's Changed

EW-9332 Update deprecated V8 function usage by @harrishancock in https://github.com/cloudflare/workerd/pull/5274
Python: Disable vendor tests on windows by @hoodmane in https://github.com/cloudflare/workerd/pull/5294
Python: Add compat flag to allow using external Python sdk by @hoodmane in https://github.com/cloudflare/workerd/pull/5281
EW-9366 Report Return event for non-fetch events too by @fhanau in https://github.com/cloudflare/workerd/pull/5093
Add support for loading system dylibs from python_modules by @hoodmane in https://github.com/cloudflare/workerd/pull/5249
[NFC] Save a handful of bytes in standard.h/c++ by @jasnell in https://github.com/cloudflare/workerd/pull/5296

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251013.0...v1.20251014.0

Open source →

1.20251011.011 Oct 2025

WO-704 Adds attributes to SQL binding spans by @m-makuch in https://github.com/cloudflare/workerd/pull/5201

What's Changed

WO-704 Adds attributes to SQL binding spans by @m-makuch in https://github.com/cloudflare/workerd/pull/5201
Add new toMarkdown binding method by @G4brym in https://github.com/cloudflare/workerd/pull/5190
Revert "Improve backpressure handling in Node writable adapter" by @jasnell in https://github.com/cloudflare/workerd/pull/5283

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251010.0...v1.20251011.0

Open source →

1.20251008.08 Oct 2025

containers: After the connection is done, we should throw an exception of the connection to the container service instead of sudden disconnections by

What's Changed

containers: After the connection is done, we should throw an exception of the connection to the container service instead of sudden disconnections by @gabivlj in https://github.com/cloudflare/workerd/pull/5239
replace new array calls with array.from by @anonrig in https://github.com/cloudflare/workerd/pull/5231
[Instrumentation] Add spans for synchronous KV calls by @jmorrell-cloudflare in https://github.com/cloudflare/workerd/pull/5251
remove eslint-disable directives by @anonrig in https://github.com/cloudflare/workerd/pull/5255
[o11y] Expand logging for events reported after IoContext was deallocated by @fhanau in https://github.com/cloudflare/workerd/pull/5230
convert stream implementation files to typescript by @anonrig in https://github.com/cloudflare/workerd/pull/5254
improve node.js filesystem errors by @anonrig in https://github.com/cloudflare/workerd/pull/5257
fix request#clone not working with js-backed streams by @anonrig in https://github.com/cloudflare/workerd/pull/5259

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251007.0...v1.20251008.0

Open source →

1.20251004.04 Oct 2025Deprecated

remove deprecated tseslint.config() call by @anonrig in https://github.com/cloudflare/workerd/pull/5224

What's Changed

STREAM-6415 Add imageCount to media binding types by @austin-mc in https://github.com/cloudflare/workerd/pull/5141
remove deprecated tseslint.config() call by @anonrig in https://github.com/cloudflare/workerd/pull/5224
refactor(bazel): move v8 to bzlmod by @alexeagle in https://github.com/cloudflare/workerd/pull/5130
refactor(bazel): move google-benchmark to bzlmod by @alexeagle in https://github.com/cloudflare/workerd/pull/5233

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251003.0...v1.20251004.0

Open source →

1.20251003.03 Oct 2025

refactor(bzlmod): remove bind of @icu by @alexeagle in https://github.com/cloudflare/workerd/pull/5213

What's Changed

refactor(bzlmod): remove bind of @icu by @alexeagle in https://github.com/cloudflare/workerd/pull/5213
[rust] migrating to kj::from by @mikea in https://github.com/cloudflare/workerd/pull/5209
refactor(bazel): move a dep to bzlmod by @alexeagle in https://github.com/cloudflare/workerd/pull/5214
[o11y] Log a useful warning when reporting span without current IncomingRequest by @fhanau in https://github.com/cloudflare/workerd/pull/5220
Clean up sql-kv-put-multiple-transaction autogate by @justin-mp in https://github.com/cloudflare/workerd/pull/5219
Remove experimental annotation from dedicated snapshot compat flag. by @dom96 in https://github.com/cloudflare/workerd/pull/5221
refactor(bazel): move perfetto to bzlmod by @alexeagle in https://github.com/cloudflare/workerd/pull/5226

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251002.0...v1.20251003.0

Open source →

1.20251001.01 Oct 2025

Fix stacked memory snapshot generation by @hoodmane in https://github.com/cloudflare/workerd/pull/5204

What's Changed

Fix stacked memory snapshot generation by @hoodmane in https://github.com/cloudflare/workerd/pull/5204
Add snapshot stability tests into workerd by @hoodmane in https://github.com/cloudflare/workerd/pull/5205
EW-9453 Implement proper STW exception propagation by @fhanau in https://github.com/cloudflare/workerd/pull/5166
improve js.obj() usages across the repository by @anonrig in https://github.com/cloudflare/workerd/pull/5191
Implement allowUnconfirmed for SQLite-backed DOs by @justin-mp in https://github.com/cloudflare/workerd/pull/5138
Add stacked Python snapshot tests by @hoodmane in https://github.com/cloudflare/workerd/pull/5206
[rust] add ada-url crate by @mikea in https://github.com/cloudflare/workerd/pull/5208

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250930.0...v1.20251001.0

Open source →

1.20250927.027 Sept 2025Deprecated

Fix the deprecation warnings on recent V8 releases. by @erikcorry in https://github.com/cloudflare/workerd/pull/5188

What's Changed

[nfc] WorkerTracer cleanup by @fhanau in https://github.com/cloudflare/workerd/pull/5151
[o11y] Remove support for Automated Tracing within LTW by @fhanau in https://github.com/cloudflare/workerd/pull/5037
Fixes Python cron triggers when default entrypoint is used. by @dom96 in https://github.com/cloudflare/workerd/pull/5179
fix: process toString support by @guybedford in https://github.com/cloudflare/workerd/pull/5186
Move IdentityTransformStream/FixedLengthStream to its own files by @jasnell in https://github.com/cloudflare/workerd/pull/5184
simplify string-wrapper in type-wrapper by @anonrig in https://github.com/cloudflare/workerd/pull/5189
WO-704 Adds tracing spans to SQL binding by @m-makuch in https://github.com/cloudflare/workerd/pull/4786
container fixup: Fix typo on condition checking positive integer by @gabivlj in https://github.com/cloudflare/workerd/pull/5194
Fix the deprecation warnings on recent V8 releases. by @erikcorry in https://github.com/cloudflare/workerd/pull/5188
Fixup handling of ab/sab in jsg serialization by @jasnell in https://github.com/cloudflare/workerd/pull/5195

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250926.0...v1.20250927.0

Open source →

1.20250926.026 Sept 2025

UniversalGatewayOptions Exclude ==> Omit by @hoodmane in https://github.com/cloudflare/workerd/pull/5173

What's Changed

UniversalGatewayOptions Exclude ==> Omit by @hoodmane in https://github.com/cloudflare/workerd/pull/5173
Revert "Revert "Log warning on IoContext timeout with pending tasks"" by @npaun in https://github.com/cloudflare/workerd/pull/5171
chore: move python to bzlmod by @alexeagle in https://github.com/cloudflare/workerd/pull/5129
[KV Instrumentation] More KV attribute tweaks by @jmorrell-cloudflare in https://github.com/cloudflare/workerd/pull/5172
Set cloudflare.r2.request.keys once in delete by @mar-cf in https://github.com/cloudflare/workerd/pull/5174
Update dependencies by @workers-devprod in https://github.com/cloudflare/workerd/pull/5177
[R2 Instrumentation] Emit hash checksums as hex strings instead of stringified arrays by @jmorrell-cloudflare in https://github.com/cloudflare/workerd/pull/5170
Bump jinja2 from 3.0.3 to 3.1.6 in /build/deps by @dependabot[bot] in https://github.com/cloudflare/workerd/pull/5176
Don't require the experimental flag for eval by @jasnell in https://github.com/cloudflare/workerd/pull/5182
container: Add setInactivityTimeout by @gabivlj in https://github.com/cloudflare/workerd/pull/5169
EW-9560 get rid of std::copy usages by @anonrig in https://github.com/cloudflare/workerd/pull/5183

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250925.0...v1.20250926.0

Open source →

1.20250924.024 Sept 2025

Pass messages logged by logWarning to the tail worker. by @danlapid in https://github.com/cloudflare/workerd/pull/5147

What's Changed

Pass messages logged by logWarning to the tail worker. by @danlapid in https://github.com/cloudflare/workerd/pull/5147
Wrap KJ_LOG_AT(), etc. macros in #ifndef, in preparation for moving them to kj by @jclee in https://github.com/cloudflare/workerd/pull/5154
reproduce & fix ada::url_pattern bug by @anonrig in https://github.com/cloudflare/workerd/pull/5153
remove unnecessary bool from Response by @anonrig in https://github.com/cloudflare/workerd/pull/5159
add process.assert by @anonrig in https://github.com/cloudflare/workerd/pull/5156
Create enable_ctx_exports compat flag for ctx.exports. by @kentonv in https://github.com/cloudflare/workerd/pull/5160
Handful of new module registry edits by @jasnell in https://github.com/cloudflare/workerd/pull/5142
Forbid bundle modules from using data: URLs as names by @jasnell in https://github.com/cloudflare/workerd/pull/5163

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250923.0...v1.20250924.0

Open source →

1.20250923.023 Sept 2025

WO-707 Adds tracing spans to Durable Objects KV calls by @m-makuch in https://github.com/cloudflare/workerd/pull/4816

What's Changed

WO-707 Adds tracing spans to Durable Objects KV calls by @m-makuch in https://github.com/cloudflare/workerd/pull/4816
Revert "EW-9366 Report fetch response earlier" by @fhanau in https://github.com/cloudflare/workerd/pull/5149
EW-9366 [o11y] Facilitate reporting I/O time for STW spans by @fhanau in https://github.com/cloudflare/workerd/pull/4870
09-20-25 build cleanup by @fhanau in https://github.com/cloudflare/workerd/pull/5146
Revert "Log warning on IoContext timeout with pending tasks" by @npaun in https://github.com/cloudflare/workerd/pull/5152

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250922.0...v1.20250923.0

Open source →

1.20250922.022 Sept 2025

Add JSONB functions to sqlite allowlist by @johnspurlock in https://github.com/cloudflare/workerd/pull/5145

What's Changed

Add JSONB functions to sqlite allowlist by @johnspurlock in https://github.com/cloudflare/workerd/pull/5145

New Contributors

@johnspurlock made their first contribution in https://github.com/cloudflare/workerd/pull/5145

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250921.0...v1.20250922.0

Open source →

1.20250920.020 Sept 2025

chore(ci): don't print as many lines of passed tests by @alexeagle in https://github.com/cloudflare/workerd/pull/5128

What's Changed

chore(ci): don't print as many lines of passed tests by @alexeagle in https://github.com/cloudflare/workerd/pull/5128
More incremental consolidation of module-related code. by @jasnell in https://github.com/cloudflare/workerd/pull/5124
Ensure reader closed promise resolves on cancel by @jasnell in https://github.com/cloudflare/workerd/pull/5126
Log warning on IoContext timeout with pending tasks by @danlapid in https://github.com/cloudflare/workerd/pull/5132
Some minor fixups with new module registry by @jasnell in https://github.com/cloudflare/workerd/pull/5133
fix request.body being undefined on express.js by @anonrig in https://github.com/cloudflare/workerd/pull/5089
[nfc] adding async-trait crate by @mikea in https://github.com/cloudflare/workerd/pull/5134
[nfc] wd_rust_crate improvements by @mikea in https://github.com/cloudflare/workerd/pull/5136
Remove accountedKjString by @jasnell in https://github.com/cloudflare/workerd/pull/5137
fix search query missing from http.request by @anonrig in https://github.com/cloudflare/workerd/pull/5135
Call setJsRpcInfo only once in jsrpc entrypoint by @mar-cf in https://github.com/cloudflare/workerd/pull/5139
update js dependencies by @anonrig in https://github.com/cloudflare/workerd/pull/5140
[KV Instrumentation] Refine the KV attributes by @jmorrell-cloudflare in https://github.com/cloudflare/workerd/pull/5120

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250919.0...v1.20250920.0

Open source →

1.20250919.019 Sept 2025

[nfc] deploy -Wsuggest-override by @mikea in https://github.com/cloudflare/workerd/pull/5117

What's Changed

[nfc] deploy -Wsuggest-override by @mikea in https://github.com/cloudflare/workerd/pull/5117
chore: move easy http_archive calls from WORKSPACE by @alexeagle in https://github.com/cloudflare/workerd/pull/5074
Add implementation of net BlockList by @jasnell in https://github.com/cloudflare/workerd/pull/5109
Set event info before calling delivering event to ensure onset event is reported first. by @mar-cf in https://github.com/cloudflare/workerd/pull/5056
Add implementation of node::assert partialDeepStrictEqual by @jasnell in https://github.com/cloudflare/workerd/pull/5110
reduce types generation duration by 98 seconds by @anonrig in https://github.com/cloudflare/workerd/pull/5121
Fixup content check in spkac public key export by @jasnell in https://github.com/cloudflare/workerd/pull/5122
Add performance classes by @anonrig in https://github.com/cloudflare/workerd/pull/5103
fix expectedLength getting lost on stream-backed response bodies by @anonrig in https://github.com/cloudflare/workerd/pull/5115
extend req.socket from event emitter by @anonrig in https://github.com/cloudflare/workerd/pull/5123
Move python module metadata state creation to worker-modules.c++. by @jasnell in https://github.com/cloudflare/workerd/pull/5119
Support source phase imports by @guybedford in https://github.com/cloudflare/workerd/pull/5075
chore: move rules_shell to MODULE.bazel by @alexeagle in https://github.com/cloudflare/workerd/pull/5127

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250918.0...v1.20250919.0

Open source →

1.20250918.018 Sept 2025

[build] Optimize all of V8 on CI to speed up tests by @fhanau in https://github.com/cloudflare/workerd/pull/5100

What's Changed

[build] Optimize all of V8 on CI to speed up tests by @fhanau in https://github.com/cloudflare/workerd/pull/5100
Handle baseline snapshot during validation correctly by @dom96 in https://github.com/cloudflare/workerd/pull/5096
Update Workers AI Types by @thatsKevinJain in https://github.com/cloudflare/workerd/pull/5111
make stream attribute private in IncomingMessage by @anonrig in https://github.com/cloudflare/workerd/pull/5116

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250917.0...v1.20250918.0

Open source →