diff --git a/vmm/src/api/openapi/cloud-hypervisor.yaml b/vmm/src/api/openapi/cloud-hypervisor.yaml
index f985e2073..92c07c574 100644
--- a/vmm/src/api/openapi/cloud-hypervisor.yaml
+++ b/vmm/src/api/openapi/cloud-hypervisor.yaml
@@ -214,7 +214,9 @@ components:
           items:
             $ref: '#/components/schemas/VhostUserBlkConfig'
         vsock:
-          $ref: '#/components/schemas/VsockConfig'
+          type: array
+          items:
+            $ref: '#/components/schemas/VsockConfig'
         iommu:
           type: boolean
           default: false