We support 64-bit Ubuntu LTS releases under standard support, and currently supported 64-bit Fedora releases. 32-bit Linux is no longer supported.

Debian and other Ubuntu/Debian-based distributions may work with the .deb package, but aren’t officially supported.

You can import the Remember The Milk package signing key with:

$ sudo rpm --import https://www.rememberthemilk.com/download/rememberthemilk-pkg.asc

Note: the rememberthemilk package sets up a yum repository entry in /etc/yum.repos.d/rememberthemilk.repo which uses this key to verify future package updates and repository metadata.