diff --git a/admin/autoupdater/files/usr/lib/autoupdater/upgrade.d/00lockfile b/admin/autoupdater/files/usr/lib/autoupdater/upgrade.d/00lockfile
new file mode 100644
index 0000000..7738ec4
--- /dev/null
+++ b/admin/autoupdater/files/usr/lib/autoupdater/upgrade.d/00lockfile
@@ -0,0 +1,8 @@
+# Create a lockfile for 3rd-party scripts which can be checked easily to ensure that
+# no reboot will be initiated while autoupdater is running
+
+lockfile='/tmp/autoupdate.lock'
+
+touch $lockfile || logger "gluon-autoupdater: lockfile could not be written"
+
+exit 0