Django 2.0.9 release notes — Django documentation
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Django/docs/3.2.x/releases/2.0.9
Django 2.0.9 release notes
October 1, 2018
Django 2.0.9 fixes a data loss bug in 2.0.8.
Bugfixes
- Fixed a race condition in
QuerySet.update_or_create()
that could result in data loss (:ticket:`29499`).