Dear all, I set up new repositories on CRAN for R 4.0.0 and the recommended packages. As the transition will probably still take a while, I also created a repo for bullseye. If you would like to use R 4.0.0 from these repos, you first need to remove r-base-core which will remove all the Debian packaged extensions, then install r-base and update your locally installed packages as described here https://cran.r-project.org/bin/linux/debian/#debian-bullseye-testing I am not currently supporting R 4.0.0 on stretch, as I am not using it. Let me know if you need it. Kind regards, Johannes P.S.: I forgot to update the repo line for buster at first, the fix is on its way. It has to be buster-cran40 of course.