Asus ZenFone 5z gets updated with May 2019 security patch

Asus has released a software update for the ZenFone 5z, which
upgrades the Android security patch level to May 2019.
Additionally, the new firmware for the ZenFone 5z also improves the
sound quality while bringing in some system optimizations. Asus
ZenFone 5z The new build comes bearing version number 90.11.162.72
and is rolled out in batches to units with different serial
numbers. If you don’t see an update prompt on your device in a week
or two, you can check for it manually by going to the Settings >
System > System updates menu of your device. Source

Source: FS – Cell Phones
Asus ZenFone 5z gets updated with May 2019 security patch