Examples of techniques for ticket event modification for a ticket for a problem tracking system are disclosed. In one example implementation according to aspects of the present disclosure, a computer-implemented method may include: generating the ticket, the ticket comprising a ticket event; presenting the ticket comprising the ticket event to a user on a display; responsive to receiving a request from the user to modify the ticket event, modifying the ticket event while preserving an unmodified ticket event; and presenting the ticket comprising the modified ticket event to the user.