diff --git a/mssql_python/cursor.py b/mssql_python/cursor.py
index 84bb650d..1b85a8b2 100644
--- a/mssql_python/cursor.py
+++ b/mssql_python/cursor.py
@@ -2599,7 +2599,11 @@ def _bulkcopy(
             pycore_connection = mssql_py_core.PyCoreConnection(pycore_context)
             pycore_cursor = pycore_connection.cursor()
 
-            result = pycore_cursor.bulkcopy(table_name, iter(data), **kwargs)
+            # Pass kwargs as a dict parameter, not as Python keyword arguments
+            # The Rust API expects: bulkcopy(table_name, data_source, kwargs=dict)
+            result = pycore_cursor.bulkcopy(
+                table_name, iter(data), kwargs=kwargs if kwargs else None
+            )
 
             return result