diff --git a/setup/system.sh b/setup/system.sh
index 4d33deb6..07f4aa1b 100755
--- a/setup/system.sh
+++ b/setup/system.sh
@@ -93,6 +93,9 @@ hide_output add-apt-repository -y universe
 # Install the certbot PPA.
 hide_output add-apt-repository -y ppa:certbot/certbot
 
+# Install the duplicity PPA.
+hide_output add-apt-repository -y ppa:duplicity-team/duplicity-release-git
+
 # ### Update Packages
 
 # Update system packages to make sure we have the latest upstream versions