diff --git a/rattail_mailchimp/importing/mailchimp.py b/rattail_mailchimp/importing/mailchimp.py
index 6c194fb..c5f9a35 100644
--- a/rattail_mailchimp/importing/mailchimp.py
+++ b/rattail_mailchimp/importing/mailchimp.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.
 #
@@ -30,7 +30,6 @@ from collections import OrderedDict
 from mailchimp3 import MailChimp
 
 from rattail import importing
-from rattail.time import localtime, make_utc
 from rattail_mailchimp import importing as mailchimp_importing
 
 
@@ -38,7 +37,9 @@ class FromMailChimpToRattail(importing.ToRattailHandler):
     """
     Handler for MailChimp -> Rattail cache import
     """
+    host_key = 'mailchimp'
     host_title = "MailChimp"
+    generic_host_title = "MailChimp"
     
     def get_importers(self):
         importers = OrderedDict()
@@ -53,7 +54,7 @@ class FromMailChimp(importing.Importer):
     """
 
     def setup(self):
-        super(FromMailChimp, self).setup()
+        super().setup()
 
         self.api_key = self.config.require('mailchimp', 'api_key')
         self.mailchimp = MailChimp(self.api_key)
@@ -65,10 +66,10 @@ class FromMailChimp(importing.Importer):
             # issue..since we clearly have a UTC value
             value = value[:-6]
             dt = datetime.datetime.strptime(value, '%Y-%m-%dT%H:%M:%S')
-            dt = localtime(self.config, dt, from_utc=True)
+            dt = self.app.localtime(dt, from_utc=True)
         else:
             dt = datetime.datetime.strptime(value, '%Y-%m-%dT%H:%M:%S%z')
-            dt = localtime(self.config, dt)
+            dt = self.app.localtime(dt)
         return dt
 
 
@@ -95,7 +96,7 @@ class MailChimpListImporter(FromMailChimp, mailchimp_importing.model.MailChimpLi
         return {
             'id': mclist['id'],
             'name': mclist['name'],
-            'date_created': make_utc(date_created),
+            'date_created': self.app.make_utc(date_created),
         }
 
 
@@ -160,6 +161,6 @@ class MailChimpListMemberImporter(FromMailChimp, mailchimp_importing.model.MailC
             'status': member['status'],
             # TODO: this API endpoint does not appear to include this field?
             # 'unsubscribe_reason': member.get('unsubscribe_reason'),
-            'last_changed': make_utc(last_changed),
+            'last_changed': self.app.make_utc(last_changed),
             'source': member['source'],
         }