diff --git a/rattail_corepos/app.py b/rattail_corepos/app.py
index 04d94e4..891eef3 100644
--- a/rattail_corepos/app.py
+++ b/rattail_corepos/app.py
@@ -2,7 +2,7 @@
 ################################################################################
 #
 #  Rattail -- Retail Software Framework
-#  Copyright © 2010-2023 Lance Edgar
+#  Copyright © 2010-2024 Lance Edgar
 #
 #  This file is part of Rattail.
 #
@@ -54,6 +54,10 @@ class CoreHandler(GenericHandler):
         from corepos.db.office_trans import model
         return model
 
+    def get_model_office_arch(self, **kwargs):
+        from corepos.db.office_arch import model
+        return model
+
     def make_session_office_op(self, dbkey='default', **kwargs):
         from corepos.db.office_op import Session
         if 'bind' not in kwargs: