To install the GNU Taler Debian packages, first ensure that you have the right Debian distribution. At this time, the packages are built for Bullseye. You need to add a file to import the GNU Taler packages. Typically, this is done by adding a file ``/etc/apt/sources.list.d/taler.list`` that looks like this: .. code-block:: deb https://deb.taler.net/apt/debian bullseye main Next, you must import the Taler Systems SA public package signing key into your keyring and update the package lists: .. code-block:: console # wget -O - https://taler.net/taler-systems.gpg.key | apt-key add - # apt update .. note:: You may want to verify the correctness of the Taler Systems key out-of-band. Now your system is ready to install the official GNU Taler binary packages using apt.