Update on the Lifetime of $\mathrm{Cs_2}$Te Cathodes Operated at the FLASH Facility

The photoinjector of the free-electron laser facilityFLASH at DESY (Hamburg, Germany) uses Cs2Te photocathodes.We give an update on lifetime and quantumefficiency of cathodes operated at FLASH during the lastyears. At the time of the conference, cathode 73.3 has beenoperated with a record of 933 days with a stable quantumefficiency of in average 8.8 %