apt upgrade не обновляет

# apt update
...
3 packages can be upgraded. Run 'apt list --upgradable' to see them.

# apt list --upgradable
Listing... Done
python3-distutils/bionic,bionic 3.7.3-1ubuntu1~18.04.york1 all [upgradable from: 3.7.1-1~18.04.york0]
python3-gdbm/bionic 3.7.3-1ubuntu1~18.04.york1 amd64 [upgradable from: 3.7.1-1~18.04.york0]
python3-lib2to3/bionic,bionic 3.7.3-1ubuntu1~18.04.york1 all [upgradable from: 3.7.1-1~18.04.york0]

# apt upgrade
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded