> For the complete documentation index, see [llms.txt](https://docs.layerlens.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.layerlens.ai/more-in-this-section-9/versioning.md).

# Versioning

SDK versioning, compatibility, deprecation policy.

The SDK follows semver. Current: `1.3.0`.

* **Major** — breaking API changes
* **Minor** — additive changes
* **Patch** — bug fixes

Deprecated symbols emit warnings for at least one minor version before removal. Always pin in production:

```bash
pip install layerlens --extra-index-url https://sdk.layerlens.ai/package==1.3.0
```

## See also

* [Release notes](/6.-build-wire-your-code/sdk-python.md)