# Datasets 4.8.5

- Product: Datasets (https://whatsnew.fyi/product/hugging-face-datasets)
- Vendor: Hugging Face
- Date: 2026-04-27
- Version: 4.8.5
- Original notes: https://github.com/huggingface/datasets/releases/tag/4.8.5
- Permalink: https://whatsnew.fyi/product/hugging-face-datasets/releases/4.8.5

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

---

- **fixed** — Decode Json() values before calling DataFrame.to_json()
- **fixed** — Decode JSON type before to_list or to_dict is called
- **fixed** — Fix batching for table-formatted datasets
- **fixed** — Fix iterable map resume state
- **fixed** — Don't embed remote files in download_and_prepare to parquet
- **added** — Parse agent traces
- **removed** — Remove print statement in JSON processing
- **changed** — Don't include files list in DatasetInfo
- **fixed** — Fix mask in embed_storage for remote files
- **fixed** — Fix original_files missing in ci json test
- **fixed** — Fix null in embed storage
- **fixed** — Fix base_path in integration tests

##### Main bug fixes
* fix: decode Json() values before calling DataFrame.to_json() (#8116) by @Brianzhengca in https://github.com/huggingface/datasets/pull/8122
* Fix: decode JSON type before to_list or to_dict is called by @ItsTania in https://github.com/huggingface/datasets/pull/8137
* Fix batching for table-formatted datasets by @bluehyena in https://github.com/huggingface/datasets/pull/8126
* Fix iterable map resume state by @Brianzhengca in https://github.com/huggingface/datasets/pull/8147
* don't embed remote files in download_and_prepare to parquet by @lhoestq in https://github.com/huggingface/datasets/pull/8150

##### Other improvements and bug fixes
* Parse agent traces by @lhoestq in https://github.com/huggingface/datasets/pull/8113
* 🔒 Pin GitHub Actions to commit SHAs by @paulinebm in https://github.com/huggingface/datasets/pull/8114
* chore: bump doc-builder SHA for PR upload workflow by @rtrompier in https://github.com/huggingface/datasets/pull/8134
* Remove print statement in JSON processing by @lhoestq in https://github.com/huggingface/datasets/pull/8136
* Don't include files list DatasetInfo (and remove old stuff) by @lhoestq in https://github.com/huggingface/datasets/pull/8128
* update ci uer by @lhoestq in https://github.com/huggingface/datasets/pull/8139
* fix warning in ci by @lhoestq in https://github.com/huggingface/datasets/pull/8140
* fix mask in embed_storage for remote files by @lhoestq in https://github.com/huggingface/datasets/pull/8151
* fix original_files missing in ci json test by @lhoestq in https://github.com/huggingface/datasets/pull/8152
* Fix null in embed storage by @lhoestq in https://github.com/huggingface/datasets/pull/8154
* Fix base_path in integration tests by @lhoestq in https://github.com/huggingface/datasets/pull/8155

##### New Contributors
* @paulinebm made their first contribution in https://github.com/huggingface/datasets/pull/8114
* @Brianzhengca made their first contribution in https://github.com/huggingface/datasets/pull/8122
* @bluehyena made their first contribution in https://github.com/huggingface/datasets/pull/8126
* @rtrompier made their first contribution in https://github.com/huggingface/datasets/pull/8134
* @ItsTania made their first contribution in https://github.com/huggingface/datasets/pull/8137

**Full Changelog**: https://github.com/huggingface/datasets/compare/4.8.4...4.8.5