diff --git a/dataconnect/service/default.py b/dataconnect/service/default.py
index 61d41fd..e8f773f 100644
--- a/dataconnect/service/default.py
+++ b/dataconnect/service/default.py
@@ -74,7 +74,13 @@ def get_dataset_versions(self, dataset_uuid: UUID) -> list[DatasetVersion]:
 
         try:
             resources = self._transport.list_resources(request)
-            return [resource_to_dataset_version(r) for r in resources]
+
+            # Return Sorted dataset versions in descending order (newest first) based on the dataset_version field.
+            return sorted(
+                (resource_to_dataset_version(r) for r in resources),
+                key=lambda dv: dv.dataset_version,
+                reverse=True,
+            )
         except Exception as ex:
             raise translate_error(ex) from ex
 
diff --git a/tests/test_service_default.py b/tests/test_service_default.py
index b4910d7..ad91b99 100644
--- a/tests/test_service_default.py
+++ b/tests/test_service_default.py
@@ -75,3 +75,14 @@
 #     assert len(studies) == 1
 #     assert transport.last_request is not None
 #     assert transport.last_request.body == ""
+
+# def test_get_dataset_versions_sorted(monkeypatch):
+#     service = DefaultDataConnectService(transport=DummyTransport())
+#     # Patch the mapping function to our dummy
+#     monkeypatch.setattr(
+#         "dataconnect.service.default.resource_to_dataset_version",
+#         dummy_resource_to_dataset_version,
+#     )
+#     result = service.get_dataset_versions(UUID("073410b6-79be-3e7d-ae37-92f6e054013e"))
+#     versions = [dv.dataset_version for dv in result]
+#     assert versions == sorted(versions, reverse=True)