diff --git a/api-reference/openapi.json b/api-reference/openapi.json
index 9cf16bc..ecd5c21 100644
--- a/api-reference/openapi.json
+++ b/api-reference/openapi.json
@@ -369,6 +369,10 @@
                       "title": "Credit",
                       "type": "string"
                     },
+                    "cumulative_top_up": {
+                      "title": "Cumulative Top Up",
+                      "type": "string"
+                    },
                     "created_at": {
                       "format": "date-time",
                       "title": "Created At",
@@ -400,6 +404,7 @@
                     "_id",
                     "user_id",
                     "credit",
+                    "cumulative_top_up",
                     "created_at",
                     "updated_at",
                     "has_phone_sha256"