Change8

Prometheus

Backend & Infra

The Prometheus monitoring system and time series database.

Latest: v3.9.131 releases4 breaking changesView on GitHub →

Release History

v3.9.12 fixes
Jan 7, 2026

This release focuses on stability and correctness, addressing a startup crash in the Agent component and fixing an issue with relabeling in the Scraping module.

v3.9.0Breaking16 fixes10 features
Jan 7, 2026

This release stabilizes Native Histograms, requiring configuration changes for collection, and introduces numerous enhancements across the API, Promtool, UI, and PromQL query engine. Numerous bug fixes address stability and correctness issues, particularly concerning histogram handling and PromQL operations.

v3.9.0-rc.0Breaking16 fixes5 features
Dec 23, 2025

This release graduates Native Histograms to a stable feature, requiring configuration via `scrape_native_histogram`, and introduces several new features across the API, Promtool, and UI, alongside numerous bug fixes in PromQL and TSDB.

v3.8.11 fix
Dec 16, 2025

This release primarily addresses a bug in the Remote Write receiver concerning response headers in the v1 flow, which previously caused incorrect error reporting from Prometheus senders.

v3.8.011 fixes8 features
Dec 2, 2025

This release stabilizes Native Histograms as an optional feature, requiring explicit configuration via `scrape_native_histograms`, and introduces several performance enhancements and bug fixes across PromQL and the UI. It also updates the Remote-write 2 specification adherence.

v3.8.0-rc.1Breaking1 feature
Nov 24, 2025

This release updates the Remote-write 2 receiving specification, renaming the 'created timestamp' to 'start timestamp', and introduces support for the OAuth2 jwt-bearer grant-type.

v3.8.0-rc.011 fixes7 features
Nov 19, 2025

This release stabilizes Native Histograms as an optional feature, requiring explicit configuration via `scrape_native_histogram`. It also introduces several performance improvements across the UI and PromQL, alongside unified AWS service discovery.

v3.7.34 fixes
Oct 30, 2025

This release focuses on bug fixes, addressing issues in UI redirects, histogram federation, promtool configuration checking, and remote-write queue deadlocks.

v3.7.25 fixes
Oct 22, 2025

This release focuses on bug fixes across AWS SDK credential handling, Relabeling validation, and PromQL parsing and formatting issues.

v3.7.11 fix
Oct 17, 2025

This release fixes a bug in OTLP translation logic by reverting breaking changes introduced in version 3.7.0 regarding label name translation for OTel attribute names.

v3.7.0Breaking18 fixes6 features
Oct 15, 2025

This release introduces significant performance improvements across PromQL and TSDB, adds support for new features like native histograms with custom buckets, and fixes numerous bugs, while also warning about a breaking change in OTLP attribute name handling.

v3.7.0-rc.018 fixes6 features
Oct 8, 2025

This release introduces significant performance improvements across PromQL and TSDB, alongside new features like native histogram support in Federation and enhanced remote-write capabilities. Several legacy remote storage metrics have been deprecated in favor of more accurate replacements.

v3.6.011 fixes3 features
Sep 22, 2025

This release introduces several new PromQL functions, enhances OTLP support with new metadata promotion options, and includes numerous bug fixes across PromQL, TSDB, and configuration validation.

v3.6.0-rc.11 feature
Sep 11, 2025

This release introduces a new metric to monitor stale series within the TSDB Head block for improved observability.

v3.6.0-rc.011 fixes3 features
Aug 23, 2025

This release introduces new PromQL functions, an API endpoint for block metadata, and several template functions. Numerous bug fixes address issues in PromQL calculations, OTLP sample generation, and TSDB stability.

v3.5.017 fixes5 features
Jul 14, 2025

Version 3.5 is a Long Term Support (LTS) release introducing several new features in PromQL, OTLP, and Discovery, alongside numerous performance enhancements and bug fixes across the system.

v3.5.0-rc.117 fixes7 features
Jul 11, 2025

This release (3.5) is an LTS version introducing several new features, performance enhancements across PromQL, UI, and TSDB, and numerous bug fixes, while removing the OTLP scope metadata promotion feature present in RC.1.

v3.5.0-rc.017 fixes6 features
Jun 30, 2025

This release (3.5) is designated as Long Term Support (LTS) and introduces several new features, particularly around PromQL experimental functions and OTLP metadata promotion, alongside numerous performance enhancements and bug fixes.

v2.53.51 fix1 feature
Jun 30, 2025

This LTS patch release introduces backward compatibility for the upcoming TSDB block index v3 and fixes an issue related to updating GOGC before loading TSDB.

v3.4.21 fix
Jun 26, 2025

This release primarily addresses a bug fix in the OTLP receiver configuration handling.

v3.4.11 fix
May 31, 2025

This release primarily addresses a bug fix related to dangling references within parsers.

v3.4.07 fixes4 features
May 17, 2025

This release introduces several new features for OTLP translation, PromQL enhancements, and improved OTLP receiver capabilities. It also includes numerous bug fixes across configuration reloading, TSDB replay, and PromQL calculations.

v3.4.0-rc.07 fixes4 features
May 2, 2025

This release introduces several new features for OTLP translation, PromQL enhancements, and primitive support for delta metrics. It also includes numerous bug fixes across configuration reloading, TSDB replay, and PromQL calculations.

v3.3.12 fixes
May 2, 2025

This release primarily focuses on bug fixes, addressing a panic issue in Azure SD related to malformed log messages and updating GOGC before loading TSDB in the configuration.

v3.3.013 fixes10 features
Apr 18, 2025

This release introduces new PromQL functions (`idelta`, `irate`) for native histograms and includes numerous performance enhancements across TSDB, Remote-Write, and scraping. Numerous bugs related to PromQL calculations and TSDB replay stability have also been fixed.

v3.3.0-rc.14 fixes
Apr 8, 2025

This release focuses on bug fixes across several components, including memory reduction in Remote-Write, improved handling in Scraping, UI corrections for Alerting rules, and specific behavior adjustments in PromQL's irate function.

v3.3.0-rc.011 fixes10 features
Mar 26, 2025

This release introduces new PromQL functions for native histograms, enhances various components like Scaleway SD and UI, and includes significant performance improvements across TSDB, API, and scraping. Numerous bugs related to PromQL, TSDB reliability, and configuration handling have also been resolved.

v2.53.42 fixes
Mar 18, 2025

This release focuses on bug fixes, addressing high CPU usage related to GOGC settings and resolving an issue where valid metrics were dropped after a scrape failure.

v3.2.11 fix
Feb 26, 2025

This release primarily addresses a bug related to header sending when using the legacy metric name validation scheme.

v3.2.05 fixes2 features
Feb 17, 2025

Prometheus v3.2.0 introduces UTF-8 support in relabel actions and rule names, adds OTLP delta-to-cumulative conversion, and includes various enhancements and bug fixes across components.

v3.2.0-rc.15 fixes3 features
Feb 4, 2025

This release introduces UTF-8 support for label replacement and rule names, adds OTLP delta-to-cumulative conversion, and includes various bug fixes across scraping, remote write, and the UI.