diff --git a/vmm/src/api/openapi/cloud-hypervisor.yaml b/vmm/src/api/openapi/cloud-hypervisor.yaml
index 8861f1e71..4c0cff139 100644
--- a/vmm/src/api/openapi/cloud-hypervisor.yaml
+++ b/vmm/src/api/openapi/cloud-hypervisor.yaml
@@ -616,6 +616,8 @@ components:
           items:
             type: integer
             format: int16
+        serial_number:
+          type: string
 
     MemoryZoneConfig:
       required: