To use our debian/ubuntu stable repository:

install the Jitsi repository key onto your system

 wget -qO - https://download.jitsi.org/jitsi-key.gpg.key | sudo apt-key add -

create sources.list.d file with the repository

 sudo sh -c "echo 'deb https://download.jitsi.org stable/' > /etc/apt/sources.list.d/jitsi-stable.list"

update your package list

 sudo apt-get -y update

install Jitsi

 sudo apt-get -y install jitsi