diff --git a/specification/operationalinsights/resource-manager/Microsoft.OperationalInsights/preview/2021-12-01-preview/Workspaces.json b/specification/operationalinsights/resource-manager/Microsoft.OperationalInsights/preview/2021-12-01-preview/Workspaces.json
index e0fa011de5b0..6a3feb55dda0 100644
--- a/specification/operationalinsights/resource-manager/Microsoft.OperationalInsights/preview/2021-12-01-preview/Workspaces.json
+++ b/specification/operationalinsights/resource-manager/Microsoft.OperationalInsights/preview/2021-12-01-preview/Workspaces.json
@@ -511,6 +511,7 @@
         "provisioningState": {
           "type": "string",
           "description": "The provisioning state of the workspace.",
+          "readOnly": true,
           "enum": [
             "Creating",
             "Succeeded",