Prometheus v3.9.1 released on 07-01-2026

Prometheus v3.9.1 is out now. This release includes critical bug fixes that enhance stability and functionality.
Users need to visit the product GitHub or official pages for more information.
What’s in this release
- [BUGFIX] Agent: fix crash shortly after startup from invalid type of object.
- [BUGFIX] Scraping: fix relabel keep/drop not working.
Upgrade notes
- No breaking changes noted in this release.
We invite users to share comments on their experience with this release.



