# Grafana Loki changelog

> A horizontally scalable, multi-tenant log aggregation system.

- Vendor: Grafana Labs
- Category: Developer Tools
- Official site: https://grafana.com/oss/loki/
- Tracked by: What's New (https://whatsnew.fyi/product/grafana-loki)
- Harvested from: GitHub (grafana/loki)
- Entries below: 10 (newest first)

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.

## Releases

### v3.6.15

- Date: 2026-08-06
- Version: v3.6.15
- Original notes: https://github.com/grafana/loki/releases/tag/v3.6.15
- Permalink: https://whatsnew.fyi/product/grafana-loki/releases/v3.6.15

- **fixed** — Preserve sketch in MergeLabels for queryrange

##### [3.6.15](https://github.com/grafana/loki/compare/v3.6.14...v3.6.15) (2026-08-05)


###### Bug Fixes

* **queryrange:** Preserve sketch in MergeLabels [release-3.6.x] ([#23771](https://github.com/grafana/loki/issues/23771)) ([20087cd](https://github.com/grafana/loki/commit/20087cd091329dc7184b51cfedf5ab330a21795e))

### v3.7.6

- Date: 2026-08-06
- Version: v3.7.6
- Original notes: https://github.com/grafana/loki/releases/tag/v3.7.6
- Permalink: https://whatsnew.fyi/product/grafana-loki/releases/v3.7.6

- **fixed** — Preserve sketch in MergeLabels for queryrange

##### [3.7.6](https://github.com/grafana/loki/compare/v3.7.5...v3.7.6) (2026-08-05)


###### Bug Fixes

* **queryrange:** Preserve sketch in MergeLabels [release-3.7.x] ([#23770](https://github.com/grafana/loki/issues/23770)) ([d48329d](https://github.com/grafana/loki/commit/d48329d090320f668cd8bd7ecd636d3dc0e664d2))

### v3.7.5

- Date: 2026-08-05
- Version: v3.7.5
- Original notes: https://github.com/grafana/loki/releases/tag/v3.7.5
- Permalink: https://whatsnew.fyi/product/grafana-loki/releases/v3.7.5

- **fixed** — Build deb/rpm packages again in the release workflow
- **fixed** — Disable docker plugin publishing on release-3.7.x
- **fixed** — Fix flush race in ingester
- **security** — Update module github.com/klauspost/compress to v1.18.7
- **security** — Update module go.opentelemetry.io/otel to v1.42.0
- **security** — Update module golang.org/x/text to v0.39.0
- **security** — Update module google.golang.org/grpc to v1.82.1

##### [3.7.5](https://github.com/grafana/loki/compare/v3.7.4...v3.7.5) (2026-08-05)


###### Bug Fixes

* Build deb/rpm packages again in the release workflow ([#23598](https://github.com/grafana/loki/issues/23598)) ([6f49272](https://github.com/grafana/loki/commit/6f4927210024a9e5496fbc760837bf2fd7dbf5f1))
* **ci:** Disable docker plugin publishing on release-3.7.x ([#23440](https://github.com/grafana/loki/issues/23440)) ([6095f71](https://github.com/grafana/loki/commit/6095f71eeba604627fbc08a4e87ed315c38d7b07))
* **ingester:** Fix flush race in ingester [release-3.7.x] ([#23682](https://github.com/grafana/loki/issues/23682)) ([ff152dc](https://github.com/grafana/loki/commit/ff152dc114a5adad5fbc797e3c8af43b97c0b920))
* **security/UNKNOWN/cmd/chunks-inspect:** Update module github.com/klauspost/compress to v1.18.7 [SECURITY] (release-3.7.x) ([#23611](https://github.com/grafana/loki/issues/23611)) ([11c4b29](https://github.com/grafana/loki/commit/11c4b29fef7483c40649f65bccf01e1cca2b42bd))
* **security/UNKNOWN/cmd/dataobj-inspect:** Update module github.com/klauspost/compress to v1.18.7 [SECURITY] (release-3.7.x) ([#23612](https://github.com/grafana/loki/issues/23612)) ([1e3108e](https://github.com/grafana/loki/commit/1e3108ecf15de374fb292f81a775b6812ffc46c3))
* **security/UNKNOWN/cmd/dataobj-inspect:** Update module go.opentelemetry.io/otel to v1.42.0 [SECURITY] (release-3.7.x) ([#23518](https://github.com/grafana/loki/issues/23518)) ([28917d3](https://github.com/grafana/loki/commit/28917d3828aae7f3150c5c1a8965467521c6a70f))
* **security/UNKNOWN/cmd/dataobj-inspect:** Update module golang.org/x/text to v0.39.0 [SECURITY] (release-3.7.x) ([#23419](https://github.com/grafana/loki/issues/23419)) ([5d2b9d4](https://github.com/grafana/loki/commit/5d2b9d4faa9b291101ee446156829932eae685c0))
* **security/UNKNOWN/operator:** Update module github.com/klauspost/compress to v1.18.7 [SECURITY] (release-3.7.x) ([#23613](https://github.com/grafana/loki/issues/23613)) ([8d71c59](https://github.com/grafana/loki/commit/8d71c59de908c1868cbffa2ceb5d26b7a8cb7f51))
* **security/UNKNOWN/:** Update module github.com/klauspost/compress to v1.18.7 [SECURITY] (release-3.7.x) ([#23610](https://github.com/grafana/loki/issues/23610)) ([941b557](https://github.com/grafana/loki/commit/941b5575c1b0e26626db924258ea3bbd8ccd47f6))
* **security/UNKNOWN/:** Update module golang.org/x/text to v0.39.0 [SECURITY] (release-3.7.x) ([#23418](https://github.com/grafana/loki/issues/23418)) ([2347a9a](https://github.com/grafana/loki/commit/2347a9a50f8272f849af07f88d6269f9e8af9988))
* **security/UNKNOWN/:** Update module google.golang.org/grpc to v1.82.1 [SECURITY] (release-3.7.x) ([#23405](https://github.com/grafana/loki/issues/23405)) ([f290af0](https://github.com/grafana/loki/commit/f290af0357a9162ab9bb8209ac4dd2426e17a36a))

### v3.6.14

- Date: 2026-08-05
- Version: v3.6.14
- Original notes: https://github.com/grafana/loki/releases/tag/v3.6.14
- Permalink: https://whatsnew.fyi/product/grafana-loki/releases/v3.6.14

- **fixed** — Fix WAL replay hang
- **fixed** — Fix deb/rpm packaging
- **security** — Update module github.com/klauspost/compress to v1.18.7

##### [3.6.14](https://github.com/grafana/loki/compare/v3.6.13...v3.6.14) (2026-08-04)


###### Bug Fixes

* Backport WAL replay hang fix to release-3.6.x ([#21176](https://github.com/grafana/loki/issues/21176)) ([#23630](https://github.com/grafana/loki/issues/23630)) ([355e2f3](https://github.com/grafana/loki/commit/355e2f35dbcb56913f6fdac9a76def563299e68b))
* **ci:** Backport deb/rpm packaging fix to release-3.6.x ([#23680](https://github.com/grafana/loki/issues/23680)) ([#23722](https://github.com/grafana/loki/issues/23722)) ([d7ee4de](https://github.com/grafana/loki/commit/d7ee4de3b8bd4015a50ad8e135a45a9513695230))
* **security/UNKNOWN/cmd/chunks-inspect:** Update module github.com/klauspost/compress to v1.18.7 [SECURITY] (release-3.6.x) ([#23615](https://github.com/grafana/loki/issues/23615)) ([a6cc2e5](https://github.com/grafana/loki/commit/a6cc2e5b24f918109d05c0583cb498f83e44f1a6))
* **security/UNKNOWN/cmd/dataobj-inspect:** Update module github.com/klauspost/compress to v1.18.7 [SECURITY] (release-3.6.x) ([#23616](https://github.com/grafana/loki/issues/23616)) ([a71c910](https://github.com/grafana/loki/commit/a71c91023d3d3b7eddb3652265bf2bd53ff0072b))
* **security/UNKNOWN/operator:** Update module github.com/klauspost/compress to v1.18.7 [SECURITY] (release-3.6.x) ([#23618](https://github.com/grafana/loki/issues/23618)) ([59970a9](https://github.com/grafana/loki/commit/59970a9be7a439cb26063f2e49e0dc3fc7cec201))
* **security/UNKNOWN/:** Update module github.com/klauspost/compress to v1.18.7 [SECURITY] (release-3.6.x) ([#23614](https://github.com/grafana/loki/issues/23614)) ([8308a12](https://github.com/grafana/loki/commit/8308a123582d6eea1c947566e0dcb30f3a6a422f))

### v3.7.4

- Date: 2026-07-24
- Version: v3.7.4
- Original notes: https://github.com/grafana/loki/releases/tag/v3.7.4
- Permalink: https://whatsnew.fyi/product/grafana-loki/releases/v3.7.4

- **fixed** — Fix delete request when using Thanos objstore client with filesystem backend
- **fixed** — Fix index filename issue with legacy S3 client and chunk_delimiter
- **security** — Update fluentd to v1.19.3 to address security vulnerabilities
- **security** — Bump Go to 1.26.5 to address CVE-2026-39822 and CVE-2026-42505
- **security** — Update module github.com/apache/thrift to v0.24.0 to address security vulnerabilities
- **security** — Update module golang.org/x/net to v0.55.0 to address security vulnerabilities
- **security** — Update module github.com/containerd/containerd/v2 to v2.0.10 to address security vulnerabilities
- **fixed** — Re-enable docker plugin publishing
- **fixed** — Fix zizmor findings for operator-images
- **fixed** — Fix Helm CI warning
- **changed** — Update module charm.land/bubbletea/v2 to v2.0.7
- **changed** — Update module charm.land/lipgloss/v2 to v2.0.4
- **changed** — Update module github.com/aws/aws-sdk-go-v2/credentials to v1.19.24
- **changed** — Update module github.com/aws/smithy-go to v1.27.3
- **changed** — Update module github.com/baidubce/bce-sdk-go to v0.9.270
- **changed** — Update module github.com/coder/quartz to v0.3.1
- **changed** — Update module github.com/IBM/ibm-cos-sdk-go to v1.14.1
- **changed** — Update module github.com/klauspost/compress to v1.18.6
- **changed** — Update module github.com/pierrec/lz4/v4 to v4.1.27
- **changed** — Update module github.com/shirou/gopsutil/v4 to v4.26.5

##### [3.7.4](https://github.com/grafana/loki/compare/v3.7.3...v3.7.4) (2026-07-22)


###### Bug Fixes

* **ci:** Fix zizmor findings for operator-images in Loki 3.7 ([#22820](https://github.com/grafana/loki/issues/22820)) ([abc1186](https://github.com/grafana/loki/commit/abc11864e661555bfee967067691e27fe8ec43ec))
* **ci:** Helm CI warning fix ([#22605](https://github.com/grafana/loki/issues/22605)) ([7389428](https://github.com/grafana/loki/commit/7389428ea0952bfa1b53b1ca9dc0ac88d6437b14))
* **ci:** Re-enable docker plugin publishing ([#22818](https://github.com/grafana/loki/issues/22818)) ([28f44a8](https://github.com/grafana/loki/commit/28f44a829588de96c3af0f48644a6d9d3643efa6))
* **compactor:** Fix delete request when using Thanos objstore client with filesystem backend [release-3.7.x] ([#22811](https://github.com/grafana/loki/issues/22811)) ([dd6fdb5](https://github.com/grafana/loki/commit/dd6fdb500a47f6a5b9015e06d2aac52eee384503))
* **deps:** Update module charm.land/bubbletea/v2 to v2.0.7 (release-3.7.x) ([#22768](https://github.com/grafana/loki/issues/22768)) ([e11f935](https://github.com/grafana/loki/commit/e11f935ec029919d680c45309c1aa703cc7b2448))
* **deps:** Update module charm.land/lipgloss/v2 to v2.0.4 (release-3.7.x) ([#22769](https://github.com/grafana/loki/issues/22769)) ([10213c2](https://github.com/grafana/loki/commit/10213c2a6651561b28409587cc49b872c1f65e59))
* **deps:** Update module github.com/aws/aws-sdk-go-v2/credentials to v1.19.24 (release-3.7.x) ([#22776](https://github.com/grafana/loki/issues/22776)) ([3daf198](https://github.com/grafana/loki/commit/3daf19818e715fb671c0fb54b2e0a6f54346db67))
* **deps:** Update module github.com/aws/smithy-go to v1.27.3 (release-3.7.x) ([#22795](https://github.com/grafana/loki/issues/22795)) ([1f6a191](https://github.com/grafana/loki/commit/1f6a19144b5109356dbe73122f9f9f48afe1177e))
* **deps:** Update module github.com/baidubce/bce-sdk-go to v0.9.270 (release-3.7.x) ([#22783](https://github.com/grafana/loki/issues/22783)) ([103ccd8](https://github.com/grafana/loki/commit/103ccd87924cbf0946947cdc213e04bd66637f78))
* **deps:** Update module github.com/coder/quartz to v0.3.1 (release-3.7.x) ([#22784](https://github.com/grafana/loki/issues/22784)) ([3509e31](https://github.com/grafana/loki/commit/3509e3166ef9b52c38ce6b7b10d098fe6ecaa771))
* **deps:** Update module github.com/IBM/ibm-cos-sdk-go to v1.14.1 (release-3.7.x) ([#22785](https://github.com/grafana/loki/issues/22785)) ([d0abe72](https://github.com/grafana/loki/commit/d0abe727a5b77e6d8afa7087c6b93f92e723c363))
* **deps:** Update module github.com/klauspost/compress to v1.18.6 (release-3.7.x) ([#22797](https://github.com/grafana/loki/issues/22797)) ([327da7c](https://github.com/grafana/loki/commit/327da7c077a234934c727b5405a4cb27f275374d))
* **deps:** Update module github.com/pierrec/lz4/v4 to v4.1.27 (release-3.7.x) ([#22798](https://github.com/grafana/loki/issues/22798)) ([6b3297f](https://github.com/grafana/loki/commit/6b3297fd78aa991dd220fb8e47fb2b39a6946feb))
* **deps:** Update module github.com/shirou/gopsutil/v4 to v4.26.5 (release-3.7.x) ([#22800](https://github.com/grafana/loki/issues/22800)) ([cb7f17d](https://github.com/grafana/loki/commit/cb7f17dcbc41c01ce7dc7ad4919a45339961ae91))
* **security/CRITICAL/clients/cmd/fluentd/docker:** Update dependency fluentd to v1.19.3 [SECURITY] (release-3.7.x) ([#22693](https://github.com/grafana/loki/issues/22693)) ([6d8f1b5](https://github.com/grafana/loki/commit/6d8f1b57bbb5cc6dcb9173ad959f5e068691a8d2))
* **security/HIGH/:** Bump Go to 1.26.5 to address CVE-2026-39822 and CVE-2026-42505 [SECURITY] ([#23393](https://github.com/grafana/loki/issues/23393)) ([b318f28](https://github.com/grafana/loki/commit/b318f2829f0ae2094ab3a1e90780450e9e4b03be))
* **security/HIGH/:** Update module github.com/apache/thrift to v0.24.0 [SECURITY] (release-3.7.x) ([#22767](https://github.com/grafana/loki/issues/22767)) ([36eb5f7](https://github.com/grafana/loki/commit/36eb5f7d1849d4a260

_[Truncated at 4000 characters — full notes: https://github.com/grafana/loki/releases/tag/v3.7.4]_

### v3.6.13

- Date: 2026-07-24
- Version: v3.6.13
- Original notes: https://github.com/grafana/loki/releases/tag/v3.6.13
- Permalink: https://whatsnew.fyi/product/grafana-loki/releases/v3.6.13

- **security** — Update dependency fluentd to v1.19.3
- **security** — Bump Go to 1.26.5 to address CVE-2026-39822 and CVE-2026-42505
- **security** — Update module google.golang.org/grpc to v1.82.1
- **security** — Update golang.org/x/net, golang.org/x/text and google.golang.org/grpc
- **security** — Update go toolchain directive to v1.25.12
- **security** — Update module golang.org/x/net to v0.56.0
- **security** — Update module golang.org/x/text to v0.39.0
- **security** — Update module github.com/containerd/containerd/v2 to v2.0.10
- **fixed** — Update objstore to include fix for GCS Exists
- **fixed** — Fix zizmor findings for operator-images in Loki 3.6
- **fixed** — Helm CI warning fix

##### [3.6.13](https://github.com/grafana/loki/compare/v3.6.12...v3.6.13) (2026-07-23)


###### Bug Fixes

* **ci:** Fix zizmor findings for operator-images in Loki 3.6 ([#22821](https://github.com/grafana/loki/issues/22821)) ([050f742](https://github.com/grafana/loki/commit/050f7422d671599830e9e59e89cca281039b6021))
* **ci:** Helm CI warning fix ([#22606](https://github.com/grafana/loki/issues/22606)) ([4bc2586](https://github.com/grafana/loki/commit/4bc258651f36107086fc7028c4af1105618e67a4))
* **security/CRITICAL/clients/cmd/fluentd/docker:** Update dependency fluentd to v1.19.3 [SECURITY] (release-3.6.x) ([#22694](https://github.com/grafana/loki/issues/22694)) ([692f2b1](https://github.com/grafana/loki/commit/692f2b1183670b4e6df0436081a00b8dcc2d640a))
* **security/HIGH/:** Bump Go to 1.26.5 to address CVE-2026-39822 and CVE-2026-42505 [SECURITY] ([#23398](https://github.com/grafana/loki/issues/23398)) ([fc478e1](https://github.com/grafana/loki/commit/fc478e1d3491aea695080498d7ac3c0f065061c3))
* **security/HIGH/pkg/push:** Update module google.golang.org/grpc to v1.82.1 [SECURITY] ([70f75b7](https://github.com/grafana/loki/commit/70f75b7fbd0c6bab35a84700ac2ee531cfd483ed))
* **security/HIGH/:** Update golang.org/x/net, golang.org/x/text and google.golang.org/grpc [SECURITY] ([70f75b7](https://github.com/grafana/loki/commit/70f75b7fbd0c6bab35a84700ac2ee531cfd483ed))
* **security/UNKNOWN/cmd/chunks-inspect:** Update go toolchain directive to v1.25.12 [SECURITY] (release-3.6.x) ([#23131](https://github.com/grafana/loki/issues/23131)) ([b327439](https://github.com/grafana/loki/commit/b3274394654e3f75996843924d54e3a8ea4c120f))
* **security/UNKNOWN/pkg/push:** Update module golang.org/x/net to v0.56.0 [SECURITY] ([70f75b7](https://github.com/grafana/loki/commit/70f75b7fbd0c6bab35a84700ac2ee531cfd483ed))
* **security/UNKNOWN/pkg/push:** Update module golang.org/x/text to v0.39.0 [SECURITY] ([70f75b7](https://github.com/grafana/loki/commit/70f75b7fbd0c6bab35a84700ac2ee531cfd483ed))
* **security/UNKNOWN/:** Update module github.com/containerd/containerd/v2 to v2.0.10 [SECURITY] (release-3.6.x) ([#22479](https://github.com/grafana/loki/issues/22479)) ([697bd83](https://github.com/grafana/loki/commit/697bd835b91ae9a04c6476bb17d86975c624a642))
* **security:** Backport security updates to release-3.6.x ([#23403](https://github.com/grafana/loki/issues/23403)) ([70f75b7](https://github.com/grafana/loki/commit/70f75b7fbd0c6bab35a84700ac2ee531cfd483ed))
* Update objstore to include fix for GCS Exists ([#23381](https://github.com/grafana/loki/issues/23381)) ([87383d8](https://github.com/grafana/loki/commit/87383d801fa71a1cc7d3732b6e8a07372aee7558))

### v3.7.3

- Date: 2026-06-24
- Version: v3.7.3
- Original notes: https://github.com/grafana/loki/releases/tag/v3.7.3
- Permalink: https://whatsnew.fyi/product/grafana-loki/releases/v3.7.3

- **removed** — switch default for OpenShift stream labels in operator
- **added** — add bloom filter to cache known streams for ExceedsLimits requests
- **added** — add builder pool to logsobj package
- **added** — add case-insensitive regex optimization
- **added** — add config to delegate stream limits check to limits-service only
- **added** — add flush manager to control data object flush lifecycle
- **added** — add GroupConsumer to kafkav2 package
- **added** — add results cache to thor query engine
- **added** — add SubstringInsensitive compute function
- **changed** — align start time when the query is received
- **added** — allow the initial offset to be set in the starting phase
- **added** — batch records before writing to sinks
- **added** — add simulated object storage latency to LogQL benchmarks
- **changed** — move to Go 1.26
- **added** — close the records channel when consumer terminates
- **added** — add a planner for compaction of data objects
- **changed** — don't shuffle shard if shard factor is 1
- **added** — early goldfish correlation ID generation with X-Loki-Goldfish-ID header
- **changed** — dedupe entries when building final result
- **added** — implement IsMember compute function
- **added** — implement regexp compute function

##### [3.7.3](https://github.com/grafana/loki/compare/v3.7.3...v3.7.3) (2026-06-24)


###### ⚠ BREAKING CHANGES

* **operator:** switch default for OpenShift stream labels ([#21001](https://github.com/grafana/loki/issues/21001))

###### Features

* add bloom filter to cache known streams for ExceedsLimits requests ([#20823](https://github.com/grafana/loki/issues/20823)) ([f5440a3](https://github.com/grafana/loki/commit/f5440a326a110162c002c9e742357a119f3ebf21))
* add builder pool to logsobj package ([#21134](https://github.com/grafana/loki/issues/21134)) ([8a68101](https://github.com/grafana/loki/commit/8a68101b3b948bdb50ca34ea43a27f86ac05aede))
* add case-insensitive regex optimization ([#20578](https://github.com/grafana/loki/issues/20578)) ([f6a6a4f](https://github.com/grafana/loki/commit/f6a6a4fad5e942b139c409405798637f67effd78))
* Add config to delegate stream limits check to limits-service only ([#21007](https://github.com/grafana/loki/issues/21007)) ([ba119f6](https://github.com/grafana/loki/commit/ba119f659a0885425280c01ce3250e13842ee599))
* add flush manager to control data object flush lifecycle ([#20680](https://github.com/grafana/loki/issues/20680)) ([c169ce3](https://github.com/grafana/loki/commit/c169ce3ae90d49cb29b68295276f6ceae3bfbc19))
* add GroupConsumer to kafkav2 package ([#20748](https://github.com/grafana/loki/issues/20748)) ([5ad60ee](https://github.com/grafana/loki/commit/5ad60ee4d9715f1ed6e4e1e10a9336e7a607b1d8))
* Add results cache to thor query engine ([#20986](https://github.com/grafana/loki/issues/20986)) ([6ef3827](https://github.com/grafana/loki/commit/6ef3827d1ff95c1d9d6ab4f150e61bdf4de812b2))
* Add SubstringInsensitive compute fn ([#20584](https://github.com/grafana/loki/issues/20584)) ([9c03192](https://github.com/grafana/loki/commit/9c03192a1270beca8a370f89976501a89676facb))
* Align start time when the query is received ([#20967](https://github.com/grafana/loki/issues/20967)) ([8e18f10](https://github.com/grafana/loki/commit/8e18f108d6326771664e7c692aa2538c9cc743ad))
* allow the initial offset to be set in the starting phase ([#20770](https://github.com/grafana/loki/issues/20770)) ([93f4bdf](https://github.com/grafana/loki/commit/93f4bdf7962be3b5c5feba19c04bd1ef277af55f))
* Batch records before writing to sinks ([#20821](https://github.com/grafana/loki/issues/20821)) ([f083618](https://github.com/grafana/loki/commit/f083618d6508375b429d524081878f3052b13832))
* **bench:** add simulated object storage latency to LogQL benchmarks ([#20733](https://github.com/grafana/loki/issues/20733)) ([5102ed0](https://github.com/grafana/loki/commit/5102ed059288ccaa0e39538c45ae840ff4424a95))
* **build:** Move to Go 1.26 ([#20988](https://github.com/grafana/loki/issues/20988)) ([4fb960c](https://github.com/grafana/loki/commit/4fb960cc9ea3e3c53499ae82b0411488647fa0b3))
* close the records chan when consumer terminates ([#20761](https://github.com/grafana/loki/issues/20761)) ([c3d0de9](https://github.com/grafana/loki/commit/c3d0de9520784ab8705dfef84867b819b712f93e))
* **dataobj-compactor:** add a planner for compaction of data objects ([#20527](https://github.com/grafana/loki/issues/20527)) ([7f1450d](https://github.com/grafana/loki/commit/7f1450d8c5ade12e140b5ee9b410aed8f3bbcdc9))
* don't shuffle shard if shard factor is 1 ([#21190](https://github.com/grafana/loki/issues/21190)) ([7ac1d16](https://github.com/grafana/loki/commit/7ac1d16c65030e7979324c8c86db4138bbfdf456))
* early goldfish correlation ID generation with X-Loki-Goldfish-ID header ([#21155](https://github.com/grafana/loki/issues/21155)) ([e90e4a6](https://github.com/grafana/loki/commit/e90e4a636380c8460fa28d45c748c9d5f3d0ae1b))
* **engine:** Dedupe entries when building final result ([#21034](https://github.com/grafana/loki/issues/21034)) ([e95137a](https://github.com/grafana/loki/commit/e95137aa81aac09f2bb1437c71325a1f6648fae8))
* **enginev2:** Implement IsMember compute function ([#20689](https://github.com/grafana/loki/issues/20689)) ([a28d8b4](ht

_[Truncated at 4000 characters — full notes: https://github.com/grafana/loki/releases/tag/v3.7.3]_

### v3.6.12

- Date: 2026-06-24
- Version: v3.6.12
- Original notes: https://github.com/grafana/loki/releases/tag/v3.6.12
- Permalink: https://whatsnew.fyi/product/grafana-loki/releases/v3.6.12

- **removed** — Move the Loki UI to a Grafana Plugin
- **changed** — Consolidate image build workflows and improve documentation in operator
- **changed** — Update operator CI publishing image strategy
- **added** — Add json parsing stage to v2 engine
- **added** — Add logfmt parse support to the v2 query engine
- **added** — Add loki health command
- **added** — Add p50, p95 and p99 section sizes per tenant
- **added** — Add p50, p95 and p99 sections per tenant to stats
- **added** — Add rules check for namespace and group
- **added** — Build multi-tenant data objects
- **added** — Capture logs drilldown flag in query samples
- **changed** — Change how analytics proxy works
- **added** — Add a metric to track the number of jobs left to conclude ongoing unit of work in compactor-hs
- **added** — Return request ID in response header for deletion requests
- **added** — Add drilldown config endpoint
- **added** — Add more aggregations for the new query engine
- **changed** — Prefetch inputs of Merge pipeline concurrently in engine
- **added** — Add compress gzip setting to fluentd plugin
- **changed** — Improve query performance with indexes and partitions in goldfish
- **added** — Add startupProbe to memcached in Helm charts

##### [3.6.12](https://github.com/grafana/loki/compare/v3.6.12...v3.6.12) (2026-06-24)


###### ⚠ BREAKING CHANGES

* **operator:** consolidate image build workflows and improve documentation ([#19395](https://github.com/grafana/loki/issues/19395))
* move the Loki UI to a Grafana Plugin ([#19390](https://github.com/grafana/loki/issues/19390))
* **operator:** CI publishing image strategy  ([#19365](https://github.com/grafana/loki/issues/19365))

###### Features

* add json parsing stage to v2 engine ([#19240](https://github.com/grafana/loki/issues/19240)) ([aec34ed](https://github.com/grafana/loki/commit/aec34ed30ae72e4cbaff064e65b4a550c932c226))
* add logfmt parse support to the v2 query engine ([#18931](https://github.com/grafana/loki/issues/18931)) ([ccb4549](https://github.com/grafana/loki/commit/ccb4549dddc18ca6255b215fdc67e122077be265))
* add loki health command (backport release-3.6.x) ([#20590](https://github.com/grafana/loki/issues/20590)) ([dfdbe2a](https://github.com/grafana/loki/commit/dfdbe2a351dd0a203513ee66b6dd0b6b983332b0))
* add p50, p95 and p99 section sizes per tenant ([#19054](https://github.com/grafana/loki/issues/19054)) ([cb3b74a](https://github.com/grafana/loki/commit/cb3b74a45d1d6704162d042f421d701ece502abc))
* add p50, p95 and p99 sections per tenant to stats ([#19044](https://github.com/grafana/loki/issues/19044)) ([d256df4](https://github.com/grafana/loki/commit/d256df481efa2b2a25c058b059f78a20de37abe4))
* add rules check for namespace and group ([#20437](https://github.com/grafana/loki/issues/20437)) ([#20463](https://github.com/grafana/loki/issues/20463)) ([7733ab1](https://github.com/grafana/loki/commit/7733ab110ab9dc02704fec30f6afdeaa3b4180fb))
* build multi-tenant data objects ([#19034](https://github.com/grafana/loki/issues/19034)) ([f60f818](https://github.com/grafana/loki/commit/f60f818bdd5f1259a7940e302e8f29a6ad6980c8))
* capture logs drilldown flag in query samples ([#19242](https://github.com/grafana/loki/issues/19242)) ([cb3f2ad](https://github.com/grafana/loki/commit/cb3f2ad5b6e1cd2941f7d55f5ebfddbe1713b5ec))
* Change how analytics proxy works ([#19098](https://github.com/grafana/loki/issues/19098)) ([82d25df](https://github.com/grafana/loki/commit/82d25dfd5a3202f1538d9084a34561bd277ebeaf))
* **compactor-hs:** add a metric to track the number of jobs left to conclude ongoing unit of work ([#19506](https://github.com/grafana/loki/issues/19506)) ([9e0f50c](https://github.com/grafana/loki/commit/9e0f50c3629211ea087c365c5acc833b6ab4e2cf))
* **deletion:** return request ID in response header ([#19444](https://github.com/grafana/loki/issues/19444)) ([6e6e8a9](https://github.com/grafana/loki/commit/6e6e8a97d970bf2fdc4b7ce6d8963c2cc84ac495))
* drilldown config endpoint ([#19028](https://github.com/grafana/loki/issues/19028)) ([52b5d95](https://github.com/grafana/loki/commit/52b5d95ed13748139b0c559cf4aa657176839680))
* **engine:** More aggregations for the new query engine ([#19350](https://github.com/grafana/loki/issues/19350)) ([1474ede](https://github.com/grafana/loki/commit/1474ede675f78c2f57139520c3b9a4bcb0da6071))
* **engine:** Prefetch inputs of Merge pipeline concurrently ([#19039](https://github.com/grafana/loki/issues/19039)) ([f50c87f](https://github.com/grafana/loki/commit/f50c87fce298da7e2aa0412a6c37761bbc33925a))
* **fluentd:** Add 'compress gzip' setting to fluentd plugin ([#18995](https://github.com/grafana/loki/issues/18995)) ([1cda925](https://github.com/grafana/loki/commit/1cda92572a66d726b1b75a1649b4627dc654d86a))
* **goldfish:** improve query performance with indexes and paritions ([#19023](https://github.com/grafana/loki/issues/19023)) ([89509de](https://github.com/grafana/loki/commit/89509dee9a429390682aa22d59c59eca58c3a2cf))
* **helm:** Add `startupProbe` to memcached ([#19166](https://github.com/grafana/loki/issues/19166)) ([f799e9b](https://github.com/grafana/loki/commit/f799e9b4c63d15cc428e72c58801056b77d8a382))
* **helm:** Add `startupProbe` to memcached exporter ([#19

_[Truncated at 4000 characters — full notes: https://github.com/grafana/loki/releases/tag/v3.6.12]_

### operator/v0.10.2 — operator: v0.10.2

- Date: 2026-06-09
- Version: operator/v0.10.2
- Original notes: https://github.com/grafana/loki/releases/tag/operator/v0.10.2
- Permalink: https://whatsnew.fyi/product/grafana-loki/releases/operator-v0.10.2

- **added** — Add passthrough-gateway component
- **added** — Introduce passthrough tenancy
- **changed** — Update ServiceMonitors to use serviceDiscoveryRole: EndpointSlice
- **fixed** — Add STS support in Azure secret creation script
- **fixed** — Fix import for yaml v4
- **fixed** — Fix RemoteWriteAuthType CEL validation in RulerConfig
- **fixed** — Redistribute ingester resources for 1x.extra-small and 1x.small to support 3 replicas
- **fixed** — Replace local pkg/push dependency with published module
- **fixed** — Fix ruler not evaluating rules due to use_thanos_objstore
- **fixed** — Use thanos objstore CA flags for S3 and Swift storage

##### [0.10.2](https://github.com/grafana/loki/compare/operator/v0.10.1...operator/v0.10.2) (2026-06-09)


###### Features

* **operator:** Add passthrough-gateway component ([#20382](https://github.com/grafana/loki/issues/20382)) ([bf06e45](https://github.com/grafana/loki/commit/bf06e45bcfc7745ee26798fdfbbbe31ecfb3bd3f))
* **operator:** Introduce passthrough tenancy ([#20573](https://github.com/grafana/loki/issues/20573)) ([ca8aac8](https://github.com/grafana/loki/commit/ca8aac8532b93705a43a5c2972c2397a3eebc820))
* **operator:** Update ServiceMonitors to use serviceDiscoveryRole: EndpointSlice ([#21731](https://github.com/grafana/loki/issues/21731)) ([d3a12c7](https://github.com/grafana/loki/commit/d3a12c766f06a333984632610dcb6a69067f51bf))


###### Bug Fixes

* **operator:** Add STS support in Azure secret creation script ([#20833](https://github.com/grafana/loki/issues/20833)) ([a9f11d6](https://github.com/grafana/loki/commit/a9f11d6759372568729e4e36afcc8a64a97e2e61))
* **operator:** Fix import for yaml v4 ([#22159](https://github.com/grafana/loki/issues/22159)) ([4b37810](https://github.com/grafana/loki/commit/4b37810b4c03b31e35f2b8d56cfd27e44ad912a3))
* **operator:** Fix RemoteWriteAuthType CEL validation in RulerConfig ([#21677](https://github.com/grafana/loki/issues/21677)) ([50e5873](https://github.com/grafana/loki/commit/50e58735302444eb0c9f1d9eb4ad0d4eb3726370))
* **operator:** Redistribute ingester resources for 1x.extra-small and 1x.small to support 3 replicas ([#21717](https://github.com/grafana/loki/issues/21717)) ([3bca03f](https://github.com/grafana/loki/commit/3bca03f02be4e98a6f98ed256e37340e173dc675))
* **operator:** Replace local pkg/push dependency with published module ([#21679](https://github.com/grafana/loki/issues/21679)) ([752874f](https://github.com/grafana/loki/commit/752874f76e758cbb42c3f299d56e7c7282029ae7))
* **operator:** Ruler doesn't evaluate rules due to use_thanos_objstore ([#21713](https://github.com/grafana/loki/issues/21713)) ([d0b1ea0](https://github.com/grafana/loki/commit/d0b1ea0f2ea0c8f1370bb873d3439fa3626b29ee))
* **operator:** Use thanos objstore CA flags for S3 and Swift storage ([#22123](https://github.com/grafana/loki/issues/22123)) ([2433c87](https://github.com/grafana/loki/commit/2433c87a3f0818b3f3f84938c0d0d61364fef105))

### v3.7.2

- Date: 2026-05-13
- Version: v3.7.2
- Original notes: https://github.com/grafana/loki/releases/tag/v3.7.2
- Permalink: https://whatsnew.fyi/product/grafana-loki/releases/v3.7.2

- **security** — Fix CVEs in release 3.7.x
- **security** — Update module github.com/aws/aws-sdk-go-v2/service/s3 to v1.97.3
- **fixed** — Fix ruler panic related to unset validation scheme
- **fixed** — Attach SHA-256 checksum on PutObject for Object Lock buckets

##### [3.7.2](https://github.com/grafana/loki/compare/v3.7.1...v3.7.2) (2026-05-13)


###### Bug Fixes

* CVEs in release 3.7.x ([#21771](https://github.com/grafana/loki/issues/21771)) ([bb4c5d8](https://github.com/grafana/loki/commit/bb4c5d8758b8540cb742466683143a9ea93743c8))
* **deps:** update module github.com/aws/aws-sdk-go-v2/service/s3 to v1.97.3 [security] (release-3.7.x) ([#21457](https://github.com/grafana/loki/issues/21457)) ([7bc9450](https://github.com/grafana/loki/commit/7bc945082fd7ef7632a9bfd18cc22f23130ea64a))
* Fix ruler panic related to unset validation scheme (backport release-3.7.x) ([#21401](https://github.com/grafana/loki/issues/21401)) ([cf65729](https://github.com/grafana/loki/commit/cf65729674b1f0be8011223c474df3e2e5253216))
* **storage:** attach SHA-256 checksum on PutObject for Object Lock buckets ([#21849](https://github.com/grafana/loki/issues/21849)) ([7df13d9](https://github.com/grafana/loki/commit/7df13d9ad3993700c3aff23edf5dfa2966281416))