diff --git a/fedora-gnome/thunderbird.sh b/fedora-gnome/thunderbird.sh
index 7050eba..aa7adaf 100644
--- a/fedora-gnome/thunderbird.sh
+++ b/fedora-gnome/thunderbird.sh
@@ -25,9 +25,10 @@ download() {
 }
 
 sudo dnf install -y thunderbird
+sudo dnf install -y https://proton.me/download/bridge/protonmail-bridge-3.16.0-1.x86_64.rpm
 
 # Change the GPG Domain name appropriately
-echo 'QUBES_GPG_DOMAIN=vault' | sudo tee -a /etc/environment
+echo 'QUBES_GPG_DOMAIN=sys-gpg' | sudo tee -a /etc/environment
 
 # Disable hardened_malloc (for now)
 sudo rm /etc/ld.so.preload