# Django 5.2.9 documentation

# Django 4.0.5 release notes

June 1, 2022

Django 4.0.5 fixes several bugs in 4.0.4.

## Bugfixes

- Fixed a bug in Django 4.0 where not all `OPTIONS` were passed to a Redis client (#33681).

- Fixed a bug in Django 4.0 that caused a crash of `QuerySet.filter()` on `IsNull()` expressions (#33705).

- Fixed a bug in Django 4.0 where a hidden quick filter toolbar in the admin’s navigation sidebar was focusable (#33725).