deleted AD users still show up as requestors

deleted AD users still show up as requestors

running version 9.3 9301

in my AD I have 3 smiths
in the requestor drop down when creating a ticket show 7 smiths

4 smiths have left the organization

I have AD Sync setup to run every 5 days

how do I get the requestor db to line up with my actual AD

                  New to ADSelfService Plus?