# MLflow v3.15.1 — MLflow 3.15.1

- Product: MLflow (https://whatsnew.fyi/product/mlflow)
- Vendor: LF AI & Data
- Date: 2026-08-03
- Version: v3.15.1
- Original notes: https://github.com/mlflow/mlflow/releases/tag/v3.15.1
- Permalink: https://whatsnew.fyi/product/mlflow/releases/v3.15.1

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** — Skip env_pack on ARM client images in Model Registry
- **fixed** — Harden version parsing against missing or non-PEP440 versions on Databricks Serverless in Scoring and Tracking

MLflow 3.15.1 is a patch release that includes bug fixes and documentation updates.

###### Bug fixes:

- [Model Registry] Skip `env_pack` on ARM client images (#24762, @qyc)
- [Scoring / Tracking] Harden version parsing against missing/non-PEP440 versions on Databricks Serverless (#24799, @PattaraS)

###### Documentation updates:

- [Docs] Clarify scorer versioning documentation (#24769, @nihalmenon)