diff --git a/__init__.py b/__init__.py
index 0a53242..c8dc43b 100644
--- a/__init__.py
+++ b/__init__.py
@@ -18,6 +18,7 @@ def register():
         party.Party,
         party.PartyIdentifier,
         stock.Configuration,
+        stock.ConfigurationSequence,
         stock.ConfigurationEDIOutputPath,
         product.Template,
         product.Product,