I have a Debian Linux system that I haven't kept update-to-date for a while. When I tried to update it, and I got the following error,
$ sudo apt-get update
Get:1 http://security.debian.org/debian-security buster/updates InRelease [65.4 kB]
Get:2 http://deb.debian.org/debian buster InRelease [122 kB]
Get:3 http://deb.debian.org/debian buster-updates InRelease [51.9 kB]
Hit:4 https://download.docker.com/linux/debian buster InRelease
Reading package lists... Done
E: Repository 'http://security.debian.org/debian-security buster/updates InRelease' changed its 'Suite' value from 'stable' to 'oldstable'
N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details.
N: Repository 'http://deb.debian.org/debian buster InRelease' changed its 'Version' value from '10.6' to '10.10'
E: Repository 'http://deb.debian.org/debian buster InRelease' changed its 'Suite' value from 'stable' to 'oldstable'
N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details.
E: Repository 'http://deb.debian.org/debian buster-updates InRelease' changed its 'Suite' value from 'stable-updates' to 'oldstable-updates'
N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details.
This is the result that Debian 10 has updated the release repo from 10.6 to 10.10. To resolve this issue, we can run the following command.
sudo apt-get update --allow-releaseinfo-change
The only interesting part here is that I had to run the command twice to confirm the problem went away. To see this, we can take a look at the transcript showing I ran the command
$ sudo apt-get update --allow-releaseinfo-change
Get:1 http://deb.debian.org/debian buster InRelease [122 kB]
Get:2 http://security.debian.org/debian-security buster/updates InRelease [65.4 kB]
Get:3 http://deb.debian.org/debian buster-updates InRelease [51.9 kB]
Hit:4 https://download.docker.com/linux/debian buster InRelease
Get:5 http://deb.debian.org/debian buster/main Sources [7,836 kB]
Get:6 http://security.debian.org/debian-security buster/updates/main Sources [199 kB]
Get:7 http://security.debian.org/debian-security buster/updates/main amd64 Packages [302 kB]
Get:8 http://security.debian.org/debian-security buster/updates/main Translation-en [159 kB]
Get:9 http://deb.debian.org/debian buster-updates/main Sources.diff/Index [7,624 B]
Ign:9 http://deb.debian.org/debian buster-updates/main Sources.diff/Index
Get:10 http://deb.debian.org/debian buster-updates/main amd64 Packages.diff/Index [7,624 B]
Get:11 http://deb.debian.org/debian buster-updates/main Translation-en.diff/Index [5,164 B]
Get:12 http://deb.debian.org/debian buster-updates/main amd64 Packages 2020-10-24-2001.35.pdiff [286 B]
Get:13 http://deb.debian.org/debian buster-updates/main amd64 Packages 2020-12-24-1401.30.pdiff [286 B]
Get:14 http://deb.debian.org/debian buster-updates/main amd64 Packages 2021-01-29-2000.47.pdiff [408 B]
Get:15 http://deb.debian.org/debian buster-updates/main amd64 Packages 2021-02-07-1359.56.pdiff [2,302 B]
Get:16 http://deb.debian.org/debian buster-updates/main amd64 Packages 2021-04-22-1401.14.pdiff [1,996 B]
Get:17 http://deb.debian.org/debian buster-updates/main amd64 Packages 2021-04-23-1401.02.pdiff [1,127 B]
Get:18 http://deb.debian.org/debian buster-updates/main amd64 Packages 2021-06-21-1401.46.pdiff [656 B]
Get:19 http://deb.debian.org/debian buster-updates/main amd64 Packages 2021-06-23-1401.37.pdiff [4,999 B]
Get:19 http://deb.debian.org/debian buster-updates/main amd64 Packages 2021-06-23-1401.37.pdiff [4,999 B]
Get:20 http://deb.debian.org/debian buster-updates/main Translation-en 2021-02-07-1359.56.pdiff [1,506 B]
Get:21 http://deb.debian.org/debian buster-updates/main Translation-en 2021-04-22-1401.14.pdiff [1,408 B]
Get:22 http://deb.debian.org/debian buster-updates/main Translation-en 2021-06-21-1401.46.pdiff [719 B]
Get:23 http://deb.debian.org/debian buster-updates/main Translation-en 2021-06-23-1401.37.pdiff [6,585 B]
Get:23 http://deb.debian.org/debian buster-updates/main Translation-en 2021-06-23-1401.37.pdiff [6,585 B]
Get:24 http://deb.debian.org/debian buster/main amd64 Packages [7,907 kB]
Get:25 http://deb.debian.org/debian buster/main Translation-en [5,968 kB]
Get:26 http://deb.debian.org/debian buster-updates/main Sources [16.6 kB]
Fetched 22.4 MB in 12s (1,806 kB/s)
Reading package lists... Done
N: Repository 'http://deb.debian.org/debian buster InRelease' changed its 'Version' value from '10.6' to '10.10'
N: Repository 'http://deb.debian.org/debian buster InRelease' changed its 'Suite' value from 'stable' to 'oldstable'
N: Repository 'http://security.debian.org/debian-security buster/updates InRelease' changed its 'Suite' value from 'stable' to 'oldstable'
N: Repository 'http://deb.debian.org/debian buster-updates InRelease' changed its 'Suite' value from 'stable-updates' to 'oldstable-updates'
$ sudo apt-get update --allow-releaseinfo-change
Hit:1 http://deb.debian.org/debian buster InRelease
Hit:2 http://security.debian.org/debian-security buster/updates InRelease
Hit:3 http://deb.debian.org/debian buster-updates InRelease
Hit:4 https://download.docker.com/linux/debian buster InRelease
$ sudo apt-get update
Hit:1 https://download.docker.com/linux/debian buster InRelease
Hit:2 http://deb.debian.org/debian buster InRelease
Hit:3 http://deb.debian.org/debian buster-updates InRelease
Hit:4 http://security.debian.org/debian-security buster/updates InRelease
Reading package lists... Done
$
