diff --git a/specification/hybridcompute/resource-manager/Microsoft.HybridCompute/preview/2022-05-10-preview/HybridCompute.json b/specification/hybridcompute/resource-manager/Microsoft.HybridCompute/preview/2022-05-10-preview/HybridCompute.json
index 2f88bcecff2b..0130a93d06f4 100644
--- a/specification/hybridcompute/resource-manager/Microsoft.HybridCompute/preview/2022-05-10-preview/HybridCompute.json
+++ b/specification/hybridcompute/resource-manager/Microsoft.HybridCompute/preview/2022-05-10-preview/HybridCompute.json
@@ -1055,6 +1055,11 @@
           "type": "string",
           "description": "Public Key that the client provides to be used during initial resource onboarding"
         },
+        "osName": {
+          "readOnly": true,
+          "type": "string",
+          "description": "The Operating System running on the hybrid machine."
+        },
         "osVersion": {
           "readOnly": true,
           "type": "string",