# v3.7.1

Released on 2019-11-06.

Bug-fix release. All changes are backward-compatible.

- Fixes a segmentation fault when serializing the `std::int64_t` minimum value and fixes
  [`contains`](../../api/basic_json/contains.md) for JSON pointers.
- Allows [`items`](../../api/basic_json/items.md) with a custom string type and makes `json_pointer::back`
  `const`.

[Full release notes](https://github.com/nlohmann/json/releases/tag/v3.7.1).

## API changes

<!-- api-changes -->