There are currently no open bugs.

"upgrade-system" versions published in Ubuntu

Mantic (1.9.1.0): universe/admin
Lunar (1.9.1.0): universe/admin
Jammy (1.9.0.0): universe/admin
Focal (1.7.3.1): universe/admin
Bionic (1.7.3.0): universe/admin
Xenial (1.7.3.0): universe/admin
Trusty (1.6.3.4): universe/admin