diff --git a/static/rdbm/spanner_index.json b/static/rdbm/spanner_index.json
index 07f8053b..7f38951a 100644
--- a/static/rdbm/spanner_index.json
+++ b/static/rdbm/spanner_index.json
@@ -12,6 +12,13 @@
     "custom": [
     ]
   },
+  "gluuPerson_oxExternalUid": {
+    "fields": [
+      "oxExternalUid"
+    ],
+    "custom": [
+    ]
+  },
   "gluuGroup": {
     "fields": [
       "inum",