DateTime does not recognize Iso DateTime string

I have datetime strings that are not recognized as a valid value, it throws following error: 

`found "2021-10-31T05:55:00+0000"; DateTime cannot represent an invalid date-time-string 2021-10-31T05:55:00+0000`

If I add a colon it works: "2021-10-31T05:55:00+00:00"; Is it possible to add support for the non-colon datetime string as it is also a valid iso string?