Loki v3.6.8 released on 25-03-2026
Loki v3.6.8 is out now. Operators building from source, teams embedding Loki components, and anyone relying on OpenTelemetry or fluent-bit runtime images should review this release for toolchain, telemetry and security fixes.
Check the project’s GitHub release notes for the full changelog and upgrade instructions.
What’s in this release
- Go toolchain bumped: the 3.6.x line now builds with Go 1.25.8, and the Go used by querytee/promtail has been adjusted for the 3.6 branch.
- OpenTelemetry SDK upgraded: go.opentelemetry.io/otel/sdk moved from v1.38.0 to v1.40.0, improving OTLP/telemetry compatibility and bringing bug/security fixes that affect tracing and metrics integrations.
- Security and packaging updates: dependency security patches include github.com/buger/jsonparser → v1.1.2 and google.golang.org/grpc → v1.79.3; the fluent-bit-related images now use a different Debian base as a packaging/runtime tweak.
Upgrade notes
- Build environments and CI that compile Loki or its components should use Go 1.25.8 to match the release; update your toolchain and any pinned Go versions before building from source.
- If you need to revert, pin to the previous 3.6.x tag (for example, v3.6.7) or rebuild from your prior revision.
Please share your experience upgrading or report any issues via the project’s GitHub issue tracker so maintainers and the community can follow up.