root@armadillo:~/keibi/keibi# sudo apt-get update
Get:1 http://security.debian.org buster/updates InRelease [34.8 kB]
Ign:2 http://download.atmark-techno.com/debian buster InRelease                
Ign:3 http://download.atmark-techno.com/debian buster-backports InRelease
Get:4 http://ftp.jp.debian.org/debian buster InRelease [122 kB]
Hit:5 http://download.atmark-techno.com/debian buster Release
Hit:6 http://download.atmark-techno.com/debian buster-backports Release
Reading package lists... Done      
E: Repository 'http://security.debian.org buster/updates InRelease' changed its 'Suite' value from 'stable' to 'oldoldstable'
N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details.
N: Repository 'http://ftp.jp.debian.org/debian buster InRelease' changed its 'Version' value from '10.8' to '10.13'
E: Repository 'http://ftp.jp.debian.org/debian buster InRelease' changed its 'Suite' value from 'stable' to 'oldoldstable'
N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details.