Even on Debian 12 (bookwork) we need to use "jessie" in the source list file.
Debian 13: Repository works on 2026-10-02.
1 2 | deb [signed-by=/etc/apt/keyrings/slacktechnologies_slack-archive-keyring.gpg] https://packagecloud.io/slacktechnologies/slack/debian jessie main |
1 2 3 4 5 6 | Types: deb URIs: https://packagecloud.io/slacktechnologies/slack/debian Suites: jessie Components: main Signed-By: /etc/apt/keyrings/slacktechnologies_slack-archive-keyring.gpg |