diff --git a/.config/setup/02-install-debian-testing.sh b/.config/setup/02-install-debian-testing.sh
new file mode 100755
index 0000000..7cf2c21
--- /dev/null
+++ b/.config/setup/02-install-debian-testing.sh
@@ -0,0 +1,10 @@
+#! /usr/bin/bash
+
+set -euo pipefail
+IFS=$'\n\t'
+
+sudo cp "$(systemd-path user-configuration)"/setup/sources.list.d/debian.sources /etc/apt/sources.list.d/
+sudo rm /etc/apt/sources.list
+
+sudo apt update
+sudo apt --yes full-upgrade