diff --git a/smartmin/models.py b/smartmin/models.py
index 2289fb5..0e6d64f 100644
--- a/smartmin/models.py
+++ b/smartmin/models.py
@@ -2,7 +2,7 @@
 import json
 import traceback
 import zoneinfo
-from datetime import datetime
+from datetime import datetime, timezone as dt_timezone
 
 from xlrd import XL_CELL_DATE, XLRDError, open_workbook, xldate_as_tuple
 
@@ -222,7 +222,7 @@ def import_xls(cls, filename, user, import_params, log=None, import_results=None
         naive_timezone = (
             zoneinfo.ZoneInfo(import_params["timezone"])
             if import_params and "timezone" in import_params
-            else timezone.utc
+            else dt_timezone.utc
         )
         tz = timezone.now().astimezone(naive_timezone).tzinfo
 
diff --git a/smartmin/templatetags/smartmin.py b/smartmin/templatetags/smartmin.py
index d628718..743f862 100644
--- a/smartmin/templatetags/smartmin.py
+++ b/smartmin/templatetags/smartmin.py
@@ -1,7 +1,7 @@
 import json
 import re
 import zoneinfo
-from datetime import datetime, timedelta
+from datetime import datetime, timedelta, timezone as dt_timezone
 
 from django import template
 from django.conf import settings
@@ -34,7 +34,7 @@ def format_datetime(time):
     """
     user_time_zone = timezone.get_current_timezone()
     if time.tzinfo is None:
-        time = time.replace(tzinfo=timezone.utc)
+        time = time.replace(tzinfo=dt_timezone.utc)
         user_time_zone = zoneinfo.ZoneInfo(getattr(settings, "USER_TIME_ZONE", "GMT"))
 
     time = time.astimezone(user_time_zone)
@@ -164,7 +164,7 @@ def map(string, args):
 @register.filter
 def gmail_time(dtime, now=None):
     if dtime.tzinfo is None:
-        dtime = dtime.replace(tzinfo=timezone.utc)
+        dtime = dtime.replace(tzinfo=dt_timezone.utc)
         user_time_zone = zoneinfo.ZoneInfo(getattr(settings, "USER_TIME_ZONE", "GMT"))
         dtime = dtime.astimezone(user_time_zone)
     else:
@@ -174,7 +174,7 @@ def gmail_time(dtime, now=None):
         now = timezone.now()
 
     if now.tzinfo is None:
-        now = now.replace(tzinfo=timezone.utc)
+        now = now.replace(tzinfo=dt_timezone.utc)
 
     twelve_hours_ago = now - timedelta(hours=12)
 
diff --git a/test_runner/blog/tests.py b/test_runner/blog/tests.py
index d7943bd..6acddf4 100644
--- a/test_runner/blog/tests.py
+++ b/test_runner/blog/tests.py
@@ -1,5 +1,5 @@
 import json
-from datetime import datetime, timedelta
+from datetime import datetime, timedelta, timezone as dt_timezone
 from unittest.mock import patch
 
 from zoneinfo import ZoneInfo
@@ -1141,7 +1141,7 @@ def setUp(self):
     def test_value_from_view(self):
         context = dict(view=self.read_view, object=self.post)
         self.assertEquals(self.post.title, get_value_from_view(context, "title"))
-        local_created = self.post.created_on.replace(tzinfo=timezone.utc).astimezone(ZoneInfo("Africa/Kigali"))
+        local_created = self.post.created_on.replace(tzinfo=dt_timezone.utc).astimezone(ZoneInfo("Africa/Kigali"))
         self.assertEquals(local_created.strftime("%b %d, %Y %H:%M"), get_value_from_view(context, "created_on"))
 
     def test_view_as_json(self):
@@ -1183,7 +1183,7 @@ def test_gmail_time(self):
         self.assertEquals(test_date.strftime("%b") + " 2", gmail_time(test_date, now))
 
         # but a different year is different
-        jan_2 = datetime(2012, 1, 2, 17, 5, 0, 0).replace(tzinfo=timezone.utc)
+        jan_2 = datetime(2012, 1, 2, 17, 5, 0, 0).replace(tzinfo=dt_timezone.utc)
         self.assertEquals("2/1/12", gmail_time(jan_2, now))
 
     def test_user_as_string(self):