diff --git a/CHANGELOG.md b/CHANGELOG.md
index e100544..6ce2ae2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,14 +5,6 @@ All notable changes to WuttaSync will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
-## v0.5.1 (2026-02-13)
-
-### Fix
-
-- fix source/target data order for import diff warning email
-- fix importer `get_keys()` logic to honor class attribute
-- add date type coercion logic for CSV importer
-
 ## v0.5.0 (2026-01-03)
 
 ### Feat
diff --git a/pyproject.toml b/pyproject.toml
index d3db422..b61d057 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "WuttaSync"
-version = "0.5.1"
+version = "0.5.0"
 description = "Wutta Framework for data import/export and real-time sync"
 readme = "README.md"
 authors = [{name = "Lance Edgar", email = "lance@wuttaproject.org"}]
diff --git a/src/wuttasync/email-templates/import_export_warning.html.mako b/src/wuttasync/email-templates/import_export_warning.html.mako
index cae4658..9be7770 100644
--- a/src/wuttasync/email-templates/import_export_warning.html.mako
+++ b/src/wuttasync/email-templates/import_export_warning.html.mako
@@ -59,7 +59,7 @@
               <h5>${model} - ${app.render_quantity(len(created) - max_diffs)} more records <em>created</em> in ${target_title} - not shown here</h5>
           % endif
 
-          % for obj, target_data, source_data in updated[:max_diffs]:
+          % for obj, source_data, target_data in updated[:max_diffs]:
               <h5>${model} <em>updated</em> in ${target_title}: ${obj}</h5>
               <% diff = make_diff(target_data, source_data, nature="update") %>
               <div style="padding-left: 2rem;">
diff --git a/src/wuttasync/importing/base.py b/src/wuttasync/importing/base.py
index 183c1b9..dd65190 100644
--- a/src/wuttasync/importing/base.py
+++ b/src/wuttasync/importing/base.py
@@ -379,10 +379,8 @@ class Importer:  # pylint: disable=too-many-instance-attributes,too-many-public-
         # nb. prefer 'keys' but use 'key' as fallback
         if "keys" in self.__dict__:
             keys = self.__dict__["keys"]
-        elif hasattr(self, "keys"):
-            keys = self.keys
-        elif hasattr(self, "key"):
-            keys = self.key
+        elif "key" in self.__dict__:
+            keys = self.__dict__["key"]
         else:
             keys = self.default_keys
 
diff --git a/tests/importing/test_base.py b/tests/importing/test_base.py
index cf49b1c..9f83ae3 100644
--- a/tests/importing/test_base.py
+++ b/tests/importing/test_base.py
@@ -90,24 +90,19 @@ class TestImporter(DataTestCase):
         imp = self.make_importer(model_class=model.User)
         self.assertEqual(imp.get_keys(), ["uuid"])
 
-        # object dict may define 'keys'
+        # class may define 'keys'
         imp = self.make_importer(model_class=model.User)
-        with patch.dict(imp.__dict__, keys=["foo", "bar"]):
+        with patch.object(imp, "keys", new=["foo", "bar"], create=True):
             self.assertEqual(imp.get_keys(), ["foo", "bar"])
 
-        # class may define 'keys'
-        with patch.object(mod.Importer, "keys", new=["foo", "baz"], create=True):
-            imp = self.make_importer(model_class=model.User)
-            self.assertEqual(imp.get_keys(), ["foo", "baz"])
-
         # class may define 'key'
-        with patch.object(mod.Importer, "key", new="whatever", create=True):
-            imp = self.make_importer(model_class=model.User)
+        imp = self.make_importer(model_class=model.User)
+        with patch.object(imp, "key", new="whatever", create=True):
             self.assertEqual(imp.get_keys(), ["whatever"])
 
         # class may define 'default_keys'
-        with patch.object(mod.Importer, "default_keys", new=["baz", "foo"]):
-            imp = self.make_importer(model_class=model.User)
+        imp = self.make_importer(model_class=model.User)
+        with patch.object(imp, "default_keys", new=["baz", "foo"]):
             self.assertEqual(imp.get_keys(), ["baz", "foo"])
 
     def test_process_data(self):