# Django 5.2.9 - dokumentacja

# Django 3.1.4 release notes

December 1, 2020

Django 3.1.4 fixes several bugs in 3.1.3.

## Poprawki błędów

- Fixed setting the `Content-Length` HTTP header in `AsyncRequestFactory` (#32162).

- Fixed passing extra HTTP headers to `AsyncRequestFactory` request methods (#32159).

- Fixed crash of key transforms for `JSONField` on PostgreSQL when using on a `Subquery()` annotation (#32182).

- Fixed a regression in Django 3.1 that caused a crash of auto-reloader for certain invocations of `runserver` on Windows with Python 3.7 and below (#32202).

- Fixed a regression in Django 3.1 that caused the incorrect grouping by a `Q` object annotation (#32200).

- Fixed a regression in Django 3.1 that caused suppressing connection errors when `JSONField` is used on SQLite (#32224).

- Fixed a crash on SQLite, when `QuerySet.values()/values_list()` contained key transforms for `JSONField` returning non-string primitive values (#32203).