diff --git a/OpenAPI/TS28105_AiMlNrm.yaml b/OpenAPI/TS28105_AiMlNrm.yaml
index 5e24d900043bc63d68516f06f5aef2b6e30261b8..66c79d93eeaa05e0c7a7fcffbc48f63bf75bf2ea 100644
--- a/OpenAPI/TS28105_AiMlNrm.yaml
+++ b/OpenAPI/TS28105_AiMlNrm.yaml
@@ -1,10 +1,10 @@
 openapi: 3.0.1
 info:
   title: AI/ML NRM
-  version: 18.7.0
+  version: 18.8.0
   description: >-
     OAS 3.0.1 specification of the AI/ML NRM
-    © 2025, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC).
+    © 2026, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC).
     All rights reserved.
 externalDocs:
   description: 3GPP TS 28.105; AI/ML Management
@@ -296,6 +296,9 @@ components:
                       $ref: 'TS28623_ComDefs.yaml#/components/schemas/Dn'
                     mLModelRef:  ## Figure 7.3a.1.1.1-1 is 1-0..1 mapping, hence should be single
                       $ref: 'TS28623_ComDefs.yaml#/components/schemas/Dn'
+                    mLModelCoordinationGroupRef:
+                      $ref: 'TS28623_ComDefs.yaml#/components/schemas/Dn'
+  
 
     MLTrainingReport-Single:
       allOf: