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**To update the expiry of a group's certificates**
The following ``update-group-certificate-configuration`` example sets a 10-day expiry for the certificates generated for the specified group. ::
aws greengrass update-group-certificate-configuration \
--group-id "8eaadd72-ce4b-4f15-892a-0cc4f3a343f1" \
--certificate-expiry-in-milliseconds 864000000
Output::
{
"CertificateExpiryInMilliseconds": 864000000,
"CertificateAuthorityExpiryInMilliseconds": 2524607999000,
"GroupId": "8eaadd72-ce4b-4f15-892a-0cc4f3a343f1"
}
For more information, see `AWS IoT Greengrass Security <https://docs.aws.amazon.com/greengrass/latest/developerguide/gg-sec.html>`__ in the *AWS IoT Greengrass Developer Guide*.