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OpenTelemetry Changelog

This site tracks pull requests to the OpenTelemetry Specification, Semantic Conventions, and Proto Definitions. The following items are tracked:

  • Non-trivial specification changes and releases.
  • New semantic convention areas or stability changes, as well as releases.
  • Updates and releases of the protos.

The goal of this site is to give maintainers a single reference for important cross-functional changes.

To add a Pull Request to this feed, label it with changelog.opentelemetry.io

2026.03

What's Changed

  • docs(collector): add Kubernetes troubleshooting guidance by @MUSKANNISHAD in https://github.com/open-telemetry/opentelemetry.io/pull/8884
  • Update dates for Observability Day and Maintainer Summit by @julianocosta89 in https://github.com/open-telemetry/opentelemetry.io/pull/9304
3/31/2026open-telemetry/opentelemetry.ioreleasedBy @theletterf

v1.10.0

What's Changed

Added

3/9/2026open-telemetry/opentelemetry-protoreleasedBy @jsuereth

Release 1.55.0

Traces

  • Add normative language to the Tracing API/SDK spec concurrency requirements.
3/5/2026open-telemetry/opentelemetry-specificationreleasedBy @jack-berg

2026.02

What's Changed

  • Auto-update registry versions (de3c98bbb20d08483760e6b4cf4e32904120caa2) by @otelbot[bot] in https://github.com/open-telemetry/opentelemetry.io/pull/9084
  • [zh] Add handling-sensitive-data.md by @windsonsea in https://github.com/open-telemetry/opentelemetry.io/pull/8715
2/28/2026open-telemetry/opentelemetry.ioreleasedBy @theletterf

v1.40.0

🛑 Breaking changes 🛑

2/19/2026open-telemetry/semantic-conventionsreleasedBy @jsuereth

Release 1.54.0

Context

  • Deprecate Jaeger propagator and make propagator implementation optional.
2/13/2026open-telemetry/opentelemetry-specificationreleasedBy @carlosalberto

Introduce vulnerability component

Introduce a new security namespace Vulnerability.

Fields are taken from ECS Vulnerability namespace

2/9/2026open-telemetry/semantic-conventionsclosedBy @trisch-me

2026.01

What's Changed

  • Refresh refcache by @otelbot-docs[bot] in https://github.com/open-telemetry/opentelemetry.io/pull/8728
  • Add ducklake collector exporter to the registry by @hrl20 in https://github.com/open-telemetry/opentelemetry.io/pull/8732
1/31/2026open-telemetry/opentelemetry.ioreleasedBy @theletterf

v1.39.0

🛑 Breaking changes 🛑

1/12/2026open-telemetry/semantic-conventionsreleasedBy @jsuereth

v1.53.0

What's Changed

Metrics

1/9/2026open-telemetry/opentelemetry-specificationreleasedBy @lmolkova
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