diff --git a/src/extensibility/python-extensibility/nexus_extensibility/_extensibility_data_source.py b/src/extensibility/python-extensibility/nexus_extensibility/_extensibility_data_source.py
index 067d32d9..10b6f447 100644
--- a/src/extensibility/python-extensibility/nexus_extensibility/_extensibility_data_source.py
+++ b/src/extensibility/python-extensibility/nexus_extensibility/_extensibility_data_source.py
@@ -68,11 +68,15 @@ class ReadRequest:
     A read request.
 
     Args:
+        original_resource_name: The original resource name.
         catalog_item: The CatalogItem to be read.
         data: The data buffer.
         status: The status buffer. A value of 0x01 ('1') indicates that the corresponding value in the data buffer is valid, otherwise it is treated as float("NaN").
     """
 
+    original_resource_name: str
+    """The original resource name."""
+
     catalog_item: CatalogItem
     """The CatalogItem to be read."""