# Polars 1.13.1 — Python Polars 1.13.1

- Product: Polars (https://whatsnew.fyi/product/polars)
- Vendor: Polars
- Date: 2024-11-13
- Version: 1.13.1
- Original notes: https://github.com/pola-rs/polars/releases/tag/py-1.13.1
- Permalink: https://whatsnew.fyi/product/polars/releases/1.13.1

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- **added** — Add IPC source node for new streaming engine
- **fixed** — Release GIL in Python APIs, part 1
- **fixed** — Fix incorrect lazy schema for aggregations
- **fixed** — Address incorrect selector & col expansion

##### ✨ Enhancements

- Add IPC source node for new streaming engine (#19454)

##### 🐞 Bug fixes

- Release GIL in Python APIs, part 1 (#19705)
- Fix incorrect lazy schema for aggregations (#19753)
- Address incorrect `selector & col` expansion (#19742)

##### 📖 Documentation

- Fix formatting of nested list (#19746)
- Add `meta.is_column` to API docs (#19744)
- Fix join API reference links (#19745)

Thank you to all our contributors for making this release possible!
@alexander-beedie, @coastalwhite, @etiennebacher, @itamarst, @nameexhaustion, @orlp, @ritchie46 and @rodrigogiraoserrao