diff --git a/OpenAPI/TS28541_5GcNrm.yaml b/OpenAPI/TS28541_5GcNrm.yaml
index 914da688f355e0b765a38d23d6e2aeebe2c3909a..f7b2b32178ff0485df44725f162c679c32910b23 100644
--- a/OpenAPI/TS28541_5GcNrm.yaml
+++ b/OpenAPI/TS28541_5GcNrm.yaml
@@ -264,7 +264,8 @@ components:
           type: string
           enum:
             - GBR
-            - NonGBR
+            - NON_GBR
+            - DELAY_CRITICAL_GBR
         priorityLevel:
           type: integer
         packetDelayBudget: