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# What’s new in 2.1.3 (November 10, 2023)

These are the changes in pandas 2.1.3. See Release notes for a full changelog including other versions of pandas.

## Fixed regressions

- Fixed infinite recursion from operations that return a new object on some DataFrame subclasses (GH 55763)

## Bug fixes

- Bug in `DatetimeIndex.diff()` raising `TypeError` (GH 55080)

- Bug in `Index.isin()` raising for Arrow backed string and `None` value (GH 55821)

- Fix `read_parquet()` and `read_feather()` for CVE-2023-47248 (GH 55894)

## Contributors

For contributors, please see /usr/share/doc/contributors_list.txt or https://github.com/pandas-dev/pandas/graphs/contributors