Loki v3.7.1 released on 27-03-2026
Loki v3.7.1 is out now. Operators running the 3.7.x line get dependency fixes for the Go runtime and gRPC that address compatibility and stability issues.
Visit the Loki GitHub repository (see the v3.7.1 tag and the referenced commit) for full details and the exact toolchain versions.
What’s in this release
- Upgrade of the Go runtime and the gRPC library on the 3.7.x branch to newer upstream versions (bug fix noted in issue #21282 and commit 2c8fff2).
- No feature additions, configuration changes or schema migrations on the 3.7.x line—this is a focused patch release.
- Released as a non-breaking patch to pick up compatibility and stability fixes; operators should validate gRPC-related integrations after upgrading.
Upgrade notes
- Non-breaking: update to the v3.7.1 images/binaries using your normal rolling-upgrade process; inspect commit 2c8fff2 or the go.mod/go.sum in the v3.7.1 tag for exact Go and gRPC versions and check remote write/receive, client libraries and Grafana/Promtail connections after the upgrade.
- If you build Loki from source, ensure your local build environment matches the updated Go version; if you need to roll back, revert to the v3.7.0 images/binaries.
Share any notes or issues you see with gRPC behaviour after upgrading on the project’s GitHub issue tracker or in community channels.