diff --git a/specification/liftrmongodb/MongoDB.Atlas.Management/tspconfig.yaml b/specification/liftrmongodb/MongoDB.Atlas.Management/tspconfig.yaml
index 161dafa2d9e7..374bac2af495 100644
--- a/specification/liftrmongodb/MongoDB.Atlas.Management/tspconfig.yaml
+++ b/specification/liftrmongodb/MongoDB.Atlas.Management/tspconfig.yaml
@@ -15,6 +15,10 @@ options:
     flavor: azure
     clear-output-folder: true
     namespace: "{package-dir}"
+  "@azure-typespec/http-client-csharp-mgmt":
+    package-name: Azure.ResourceManager.MongoDBAtlas
+    namespace: "{package-name}"
+    new-project: false
   "@azure-tools/typespec-java":
     package-dir: "azure-resourcemanager-mongodbatlas"
     namespace: "com.azure.resourcemanager.mongodbatlas"