# BentoML v1.4.39

- Product: BentoML (https://whatsnew.fyi/product/bentoml)
- Vendor: BentoML
- Date: 2026-05-07
- Version: v1.4.39
- Original notes: https://github.com/bentoml/BentoML/releases/tag/v1.4.39
- Permalink: https://whatsnew.fyi/product/bentoml/releases/v1.4.39

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **fixed** — Prevent following symlinks when copying files in BentoStore
- **fixed** — Add sharing=locked to BuildKit cache mounts for multi-arch builds
- **fixed** — Enhance Dockerfile generation by normalizing base image lines and adding tests
- **fixed** — Defer prometheus_client import in bentoml.metrics to fix histogram collection in multiprocess mode
- **fixed** — Handle string input in FileSchema by encoding to UTF-8

##### What's Changed
* ci: pre-commit autoupdate [skip ci] by @pre-commit-ci[bot] in https://github.com/bentoml/BentoML/pull/5593
* fix: prevent following symlinks when copying files in BentoStore by @frostming in https://github.com/bentoml/BentoML/pull/5598
* fix: add sharing=locked to BuildKit cache mounts for multi-arch builds by @lawrence3699 in https://github.com/bentoml/BentoML/pull/5597
* fix: enhance Dockerfile generation by normalizing base image lines and adding tests by @frostming in https://github.com/bentoml/BentoML/pull/5603
* fix: defer prometheus_client import in bentoml.metrics to fix histogram collection in multiprocess mode by @ramkrishs in https://github.com/bentoml/BentoML/pull/5602
* ci: pre-commit autoupdate [skip ci] by @pre-commit-ci[bot] in https://github.com/bentoml/BentoML/pull/5605
* fix: handle string input in FileSchema by encoding to UTF-8 by @frostming in https://github.com/bentoml/BentoML/pull/5606

##### New Contributors
* @lawrence3699 made their first contribution in https://github.com/bentoml/BentoML/pull/5597
* @ramkrishs made their first contribution in https://github.com/bentoml/BentoML/pull/5602

**Full Changelog**: https://github.com/bentoml/BentoML/compare/v1.4.38...v1.4.39