diff --git a/specification/cost-management/resource-manager/Microsoft.CostManagement/CostManagement/tspconfig.yaml b/specification/cost-management/resource-manager/Microsoft.CostManagement/CostManagement/tspconfig.yaml
index 9806d2155191..37a69580b769 100644
--- a/specification/cost-management/resource-manager/Microsoft.CostManagement/CostManagement/tspconfig.yaml
+++ b/specification/cost-management/resource-manager/Microsoft.CostManagement/CostManagement/tspconfig.yaml
@@ -43,6 +43,10 @@ options:
   "@azure-typespec/http-client-csharp-mgmt":
     namespace: "Azure.ResourceManager.CostManagement"
     emitter-output-dir: "{output-dir}/{service-dir}/{namespace}"
+  "@azure-typespec/http-client-csharp-provisioning":
+    namespace: "Azure.Provisioning.CostManagement"
+    emitter-output-dir: "{output-dir}/{service-dir}/{namespace}"
+    api-version: "2025-03-01"
 linter:
   extends:
     - "@azure-tools/typespec-azure-rulesets/resource-manager"