diff --git a/vmm/src/api/openapi/cloud-hypervisor.yaml b/vmm/src/api/openapi/cloud-hypervisor.yaml
index 6ef576f43..c4dcae04c 100644
--- a/vmm/src/api/openapi/cloud-hypervisor.yaml
+++ b/vmm/src/api/openapi/cloud-hypervisor.yaml
@@ -500,6 +500,8 @@ components:
           type: array
           items:
             $ref: '#/components/schemas/SgxEpcConfig'
+        tdx:
+          $ref: '#/components/schemas/TdxConfig'
         numa:
           type: array
           items:
@@ -946,6 +948,15 @@ components:
           type: boolean
           default: false
 
+    TdxConfig:
+      required:
+      - firmware
+      type: object
+      properties:
+        firmware:
+          type: string
+          description: Path to the firmware that will be used to boot the TDx guest up.
+
     NumaDistance:
       required:
       - destination