diff --git a/on-boot-script/README.md b/on-boot-script/README.md
index 88001b5..6245de0 100644
--- a/on-boot-script/README.md
+++ b/on-boot-script/README.md
@@ -49,6 +49,7 @@
     Examples:
     * Start a DNS Container [10-dns.sh](../dns-common/on_boot.d/10-dns.sh)
     * Start wpa_supplicant [on_boot.d/10-wpa_supplicant.sh](examples/udm-files/on_boot.d/10-wpa_supplicant.sh)
+    * Add a persistent ssh key for the root user [on_boot.d/15-add-root-ssh-key.sh](examples/udm-files/on_boot.d/15-add-root-ssh-key.sh)
 
 ## Version History
 
diff --git a/on-boot-script/examples/udm-files/on_boot.d/15-add-root-ssh-key.sh b/on-boot-script/examples/udm-files/on_boot.d/15-add-root-ssh-key.sh
new file mode 100644
index 0000000..eb780cf
--- /dev/null
+++ b/on-boot-script/examples/udm-files/on_boot.d/15-add-root-ssh-key.sh
@@ -0,0 +1,10 @@
+#!/bin/sh
+
+MY_SSH_KEY="ADD PUBLIC SSH KEY HERE"
+KEYS_FILE="/root/.ssh/authorized_keys"
+
+# Places public key in ~/.ssh/authorized_keys if not present
+if ! grep -Fxq "$MY_SSH_KEY" "$KEYS_FILE"; then
+    echo "$MY_SSH_KEY" >> "$KEYS_FILE"
+fi
+