created_at value has the timezone offset applied twice (>= 5.0.0)

[Fosfen]

Hello !
I've been upgrading a Rails app to Rails 5, and needed to upgrade audited to a newer version (>= 5.0.0).

Some of our unit tests failed because of timezone offset being applied twice on the created_at field for audits.
Here is an example of what happens:

Supposed server time is 1970-01-01 10:00:00 +02:00
> SomeModel.last.update!(audited_column: "fake value")

> SomeModel.last.audits.last.created_at
=> 1970-01-01 12:00:00 +02:00

Expected behavior:
> SomeModel.last.audits.last.created_at
=> 1970-01-01 10:00:00 +02:00

Obviously no problem appears when the app runs on a UTC local time.
The issue seems to happen only with audits (no other model is impacted), is there a way to get the correct timestamp for audits ?