# Micronaut v5.1.12 — Micronaut Core 5.1.12

- Product: Micronaut (https://whatsnew.fyi/product/micronaut)
- Vendor: Micronaut Foundation
- Date: 2026-08-21
- Version: v5.1.12
- Original notes: https://github.com/micronaut-projects/micronaut-core/releases/tag/v5.1.12
- Permalink: https://whatsnew.fyi/product/micronaut/releases/v5.1.12

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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- **added** — Add Sec-Fetch-* HTTP Headers
- **changed** — Document piped stream limitations for streamed responses

<!-- Release notes generated using configuration in .github/release.yml at 5.1.x -->

##### What's Changed
###### Dependency updates 🚀
* Update groovy from 5.0.6 to 5.0.8. by @sdelamo in https://github.com/micronaut-projects/micronaut-core/pull/12885
###### Other Changes 💡
* Document piped stream limitations for streamed responses by @yawkat in https://github.com/micronaut-projects/micronaut-core/pull/12514
* Add Sec-Fetch-* HTTP Headers by @sdelamo in https://github.com/micronaut-projects/micronaut-core/pull/12899

**Full Changelog**: https://github.com/micronaut-projects/micronaut-core/compare/v5.1.11...v5.1.12