Sqlalchemy throws ValueError: datetime not corresponding to isoformat

[MRB60]

With Sqlalchemy 2.0:
when defining a DateTime column in table model as:
..., default=datetime.datetime.utcnow)

I get the following error at query:
File "/venv/lib/python3.8/site-packages/sqlalchemy/engine/result.py", line 521, in <listcomp> return [make_row(row) for row in rows] File "lib/sqlalchemy/cyextension/resultproxy.pyx", line 25, in sqlalchemy.cyextension.resultproxy.BaseRow.__init__ File "lib/sqlalchemy/cyextension/processors.pyx", line 34, in sqlalchemy.cyextension.processors.str_to_datetime ValueError: Invalid isoformat string: '2023-04-24 08:54:34.53687'
it seem to work with:
datetime.datetime.utcnow()
But that datetime is then corresponding to table creation time and not row creation time.

Any suggestion what I can do about it?
The issue does not occur when using Sqlite3.

[MRB60]

UPDATE:
omitting microseconds in datetime.utcnow fixed the problem.
datetime seem to be stored correctly (e.g. 2023-04-24T09:02:02.682648Z via CLI) but when fetched via Sqlalchemy query,
it seems as datetime microsecond part is truncated to 5 digits. Must be 6.