diff --git a/rattail_corepos/config.py b/rattail_corepos/config.py
index cdb032e..376e365 100644
--- a/rattail_corepos/config.py
+++ b/rattail_corepos/config.py
@@ -26,12 +26,11 @@ Rattail-COREPOS Config Extension
 
 import warnings
 
+from wuttjamaican.conf import WuttaConfigExtension
 from wuttjamaican.db.conf import get_engines
 
-from rattail.config import ConfigExtension
 
-
-class RattailCOREPOSExtension(ConfigExtension):
+class RattailCOREPOSExtension(WuttaConfigExtension):
     """
     Config extension for Rattail-COREPOS
     """