diff --git a/schema/metadata/entityDefs.json b/schema/metadata/entityDefs.json
index 3532d5db59..b6e471d25f 100644
--- a/schema/metadata/entityDefs.json
+++ b/schema/metadata/entityDefs.json
@@ -1035,7 +1035,7 @@
                 },
                 "optimisticConcurrencyControlIgnore": {
                     "type": "boolean",
-                    "description": "Ignore optimistic concurrency control."
+                    "description": "Ignore optimistic concurrency control. As of v9.1."
                 },
                 "additionalAttributeList": {
                     "type": "array",