diff --git a/PACKAGE-DEBIAN.md b/PACKAGE-DEBIAN.md
index 48aec05..ac93435 100644
--- a/PACKAGE-DEBIAN.md
+++ b/PACKAGE-DEBIAN.md
@@ -35,9 +35,12 @@ systemctl enable --now ubxtool@ttyACM3
 ### Automatic Updates
 
 Armbian and Raspbian have apt-daily timers enabled by default.
+However, most configurations for unattended installs require customization.
 
-Sources should update randomly twice daily but actual package updates
-will be applied randomly during a one-hour window depending on computer timezone.
+A simple timer is included that will apply any galmon upgrades every three days:
+```sh
+systemctl enable --now galmon-upgrade.timer
+```
 
 You can perform an immediate update by hand:
 ```sh
diff --git a/debian/galmon.galmon-upgrade.service b/debian/galmon.galmon-upgrade.service
new file mode 100644
index 0000000..891ca04
--- /dev/null
+++ b/debian/galmon.galmon-upgrade.service
@@ -0,0 +1,15 @@
+[Unit]
+Description=Upgrade Galmon Software
+After=network.target nss-lookup.target
+StartLimitIntervalSec=0
+# require that the configuration exists
+ConditionPathExists=/etc/default/galmon
+
+[Service]
+Type=simple
+Restart=never
+ExecPreStart=-apt-get update
+ExecStart=-apt-get upgrade -y galmon
+
+[Install]
+WantedBy=multi-user.target
diff --git a/debian/galmon.galmon-upgrade.timer b/debian/galmon.galmon-upgrade.timer
new file mode 100644
index 0000000..7715a4b
--- /dev/null
+++ b/debian/galmon.galmon-upgrade.timer
@@ -0,0 +1,10 @@
+[Unit]
+Description=Update galmon
+Documentation=man:ubxtool
+
+[Timer]
+OnBootSec=3min
+OnUnitActiveSec=3d
+
+[Install]
+WantedBy=timers.target
diff --git a/debian/galmon.postinst b/debian/galmon.postinst
index 5ebdd5c..f11d2d5 100755
--- a/debian/galmon.postinst
+++ b/debian/galmon.postinst
@@ -35,11 +35,13 @@ fi
 
 print_help_text() {
   echo "Galmon installation finished. If this is your first time, please:"
-  echo "  1) Create a ubxtool configuration 2) Enabled the service"
+  echo "  1) Create a ubxtool configuration 2) Enable the service"
+  echo "  3) Enable the timer for automatic upgrades if you want"
   echo "Replace ttyACM0 below with your device listed in /dev"
   echo "Example: cp /etc/default/galmon /etc/default/ubxtool-ttyACM0"
   echo "Example: vi /etc/default/ubxtool-ttyACM0"
   echo "Example: systemctl enable --now ubxtool@ttyACM0"
+  echo "Example: systemctl enable --now galmon-upgrade.timer"
 }
 
 setup_user
diff --git a/debian/rules b/debian/rules
index 4120a69..bbd88e5 100755
--- a/debian/rules
+++ b/debian/rules
@@ -15,6 +15,8 @@ override_dh_installinit:
 	dh_installinit
 
 override_dh_installsystemd:
+	dh_installsystemd --no-enable --no-start --name=galmon-upgrade galmon-upgrade.service
+	dh_installsystemd --no-enable --no-start --name=galmon-upgrade galmon-upgrade.timer
 	dh_installsystemd --no-enable --no-start --name=navnexus navnexus.service
 	dh_installsystemd --no-enable --no-start --name=navrecv navrecv.service
 	dh_installsystemd --no-enable --no-start --name=ubxtool@ ubxtool@.service