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v4.2.1

onyx-dot-app/onyxv4.2.1Jun 26, 2026by acaprau

AI Summary

Maintenance release bringing security and performance features from v4.3 to the v4.2 branch.

Key Highlights

  • Added TLS support for Postgres with server certificate verification
  • Added support for streaming large spreadsheets via file-backed TabularSection
  • Improved chat tool behavior and search timeout handling

New Features

  • Postgres TLS support
  • Large spreadsheet indexing

Full Release Notes

## Warning
Do not upgrade to this release if you want to preserve your existing indexed documents but have not yet run the document index migration, which can be done from any version v3.x. [See additional documentation here](https://docs.onyx.app/admins/advanced_configs/opensearch_document_index_migration#opensearch-document-index-migration).

See the assets to download this version and install.

## What's Changed
* feat(db): support TLS for Postgres with server certificate verification (#12290) to release v4.2 by @onyx-cherry-pick[bot] in https://github.com/onyx-dot-app/onyx/pull/12293
* feat(indexing): docprocessing stage-metric coverage + residual (#12182) to release v4.2 by @onyx-cherry-pick[bot] in https://github.com/onyx-dot-app/onyx/pull/12302
* fix(chat): suppress open_url reminder when the tool is disabled (#12323) to release v4.2 by @onyx-cherry-pick[bot] in https://github.com/onyx-dot-app/onyx/pull/12327
* fix(search): bound document_filter LLM calls with a timeout (ENG-4238) (#12333) to release v4.2 by @onyx-cherry-pick[bot] in https://github.com/onyx-dot-app/onyx/pull/12336
* fix(model_server): cap torch threads to cgroup CPU quota (#12351) to release v4.2 by @onyx-cherry-pick[bot] in https://github.com/onyx-dot-app/onyx/pull/12356
* refactor(slackbot): move source icons to public assets and delete dead code (#12385) to release v4.2 by @onyx-cherry-pick[bot] in https://github.com/onyx-dot-app/onyx/pull/12388
* fix: hierarchy node cross batch stubs (#12365) to release v4.2 by @onyx-cherry-pick[bot] in https://github.com/onyx-dot-app/onyx/pull/12391
* fix(settings): respect "Always Start with an Agent" for anonymous users (#12394) to release v4.2 by @onyx-cherry-pick[bot] in https://github.com/onyx-dot-app/onyx/pull/12398
* fix: notion db parents (#12393) to release v4.2 by @onyx-cherry-pick[bot] in https://github.com/onyx-dot-app/onyx/pull/12395
* feat(indexing): stream large spreadsheets via file-backed TabularSection (#12292) to release v4.2 by @onyx-cherry-pick[bot] in https://github.com/onyx-dot-app/onyx/pull/12405
* fix: drive resourcekey usage when following shortcuts (#12446) to release v4.2 by @evan-onyx in https://github.com/onyx-dot-app/onyx/pull/12459

**Full Changelog**: https://github.com/onyx-dot-app/onyx/compare/v4.2.0...v4.2.1