def test_update(self):
        # Get the object to work with
        obj = self.obj

        # Change something
        obj.boolean = True
        obj.save()

        # Check for log entries
        self.assertTrue(obj.history.filter(action=LogEntry.Action.UPDATE).count() == 1, msg="There is one log entry for 'UPDATE'")

        history = obj.history.get(action=LogEntry.Action.UPDATE)

        self.assertJSONEqual(history.changes, '{"boolean": ["False", "True"]}', msg="The change is correctly logged")
Updates are logged correctly.
dataset/ETHPy150Open jjkester/django-auditlog/src/auditlog_tests/tests.py/SimpleModelTest.test_update