# NOTE: These instructions only work for 64-bit Debian-based # Linux distributions such as Ubuntu, Mint etc. # 1. Install our official public software signing key: wget -O- https://updates.signal.org/desktop/apt/keys.asc | gpg --dearmor > signal-desktop-keyring.gpg cat signal-desktop-keyring.gpg | sudo tee /usr/share/keyrings/signal-desktop-keyring.gpg > /dev/null # 2. Add our repository to your l