diff --git a/release/models/system/openconfig-system-bootz.yang b/release/models/system/openconfig-system-bootz.yang
index b34c2b8ac..76993bdd3 100644
--- a/release/models/system/openconfig-system-bootz.yang
+++ b/release/models/system/openconfig-system-bootz.yang
@@ -18,6 +18,7 @@ module openconfig-system-bootz {
     "This module adds configuration and operational state relating to bootz
     service running on a network device.";
 
+  reference "https://github.com/openconfig/bootz";
 
   oc-ext:openconfig-version "1.1.0";
   oc-ext:catalog-organization "openconfig";