diff --git a/board/common/overlay/usr/share/post-upgrade/20201007.sh b/board/common/overlay/usr/share/post-upgrade/20201007.sh
new file mode 100755
index 0000000000..b97de945db
--- /dev/null
+++ b/board/common/overlay/usr/share/post-upgrade/20201007.sh
@@ -0,0 +1,4 @@
+#!/bin/bash
+
+# remove old ntp.conf (ntpd was replaced by chrony)
+rm -f /data/etc/ntp.conf