def set_nextUpdate(self, when):
return self._set_boundary_time(_lib.X509_CRL_get_nextUpdate, when)<EOL>
Set when the CRL will next be udpated.

The timestamp is formatted as an ASN.1 TIME::

    YYYYMMDDhhmmssZ

.. versionadded:: 16.1.0

:param bytes when: A timestamp string.
:return: ``None``