diff --git a/src/dsmr_consumption/tests/test_services.py b/src/dsmr_consumption/tests/test_services.py
index 7f72f33cc..e466c18fd 100644
--- a/src/dsmr_consumption/tests/test_services.py
+++ b/src/dsmr_consumption/tests/test_services.py
@@ -1,3 +1,4 @@
+import datetime
 from decimal import Decimal
 from unittest import mock
 
@@ -76,10 +77,10 @@ def test_processing(self):
                 [
                     # Asume a one hour backtrack.
                     timezone.make_aware(
-                        timezone.datetime(2015, 11, 10, hour=18), timezone.utc
+                        timezone.datetime(2015, 11, 10, hour=18), datetime.timezone.utc
                     ),
                     timezone.make_aware(
-                        timezone.datetime(2015, 11, 10, hour=19), timezone.utc
+                        timezone.datetime(2015, 11, 10, hour=19), datetime.timezone.utc
                     ),
                 ],
             )
diff --git a/src/dsmr_datalogger/tests/models/test_reading.py b/src/dsmr_datalogger/tests/models/test_reading.py
index c5207d0fb..77e017a2c 100644
--- a/src/dsmr_datalogger/tests/models/test_reading.py
+++ b/src/dsmr_datalogger/tests/models/test_reading.py
@@ -1,3 +1,4 @@
+import datetime
 from unittest import mock
 
 from django.test import TestCase
@@ -10,7 +11,7 @@ class TestDsmrReading(TestCase):
     @mock.patch("django.utils.timezone.now")
     def setUp(self, now_mock):
         now_mock.return_value = timezone.make_aware(
-            timezone.datetime(2018, 1, 1), timezone=timezone.utc
+            timezone.datetime(2018, 1, 1), timezone=datetime.timezone.utc
         )
         self.instance = DsmrReading.objects.create(
             timestamp=timezone.now(),
@@ -39,7 +40,7 @@ def test_managers(self):
     def test_convert_to_local_timezone(self, now_mock):
         """Test altering the timezone formatting for the timestamps."""
         now_mock.return_value = timezone.make_aware(
-            timezone.datetime(2018, 1, 1), timezone=timezone.utc
+            timezone.datetime(2018, 1, 1), timezone=datetime.timezone.utc
         )
 
         self.assertEqual(str(self.instance.timestamp), "2018-01-01 00:00:00+00:00")
diff --git a/src/dsmr_mqtt/tests/services/test_consumption.py b/src/dsmr_mqtt/tests/services/test_consumption.py
index 2b2c5b013..e21108678 100644
--- a/src/dsmr_mqtt/tests/services/test_consumption.py
+++ b/src/dsmr_mqtt/tests/services/test_consumption.py
@@ -1,3 +1,4 @@
+import datetime
 from unittest import mock
 import json
 
@@ -89,7 +90,7 @@ def test_create_electricity_signal(self, *service_mocks):
     @mock.patch("django.utils.timezone.now")
     def test_publish_json_gas_consumption(self, now_mock, queue_message_mock):
         now_mock.return_value = timezone.make_aware(
-            timezone.datetime(2020, 1, 1), timezone=timezone.utc
+            timezone.datetime(2020, 1, 1), timezone=datetime.timezone.utc
         )
         json_settings = consumption.JSONGasConsumptionMQTTSettings.get_solo()
         gas_consumption = self._create_gas_consumption()
@@ -130,7 +131,7 @@ def test_publish_json_gas_consumption(self, now_mock, queue_message_mock):
     @mock.patch("django.utils.timezone.now")
     def test_publish_split_topic_gas_consumption(self, now_mock, queue_message_mock):
         now_mock.return_value = timezone.make_aware(
-            timezone.datetime(2020, 1, 1), timezone=timezone.utc
+            timezone.datetime(2020, 1, 1), timezone=datetime.timezone.utc
         )
         split_topic_settings = (
             consumption.SplitTopicGasConsumptionMQTTSettings.get_solo()
@@ -176,7 +177,7 @@ def test_publish_json_quarter_hour_peak_consumption(
         self, now_mock, queue_message_mock
     ):
         now_mock.return_value = timezone.make_aware(
-            timezone.datetime(2023, 1, 1), timezone=timezone.utc
+            timezone.datetime(2023, 1, 1), timezone=datetime.timezone.utc
         )
         json_settings = (
             consumption.JSONQuarterHourPeakElectricityConsumptionMQTTSettings.get_solo()
@@ -221,7 +222,7 @@ def test_publish_split_topic_quarter_hour_peak_consumption(
         self, now_mock, queue_message_mock
     ):
         now_mock.return_value = timezone.make_aware(
-            timezone.datetime(2023, 1, 1), timezone=timezone.utc
+            timezone.datetime(2023, 1, 1), timezone=datetime.timezone.utc
         )
         split_topic_settings = (
             consumption.SplitTopicQuarterHourPeakElectricityConsumptionMQTTSettings.get_solo()
diff --git a/src/dsmr_mqtt/tests/services/test_telegram.py b/src/dsmr_mqtt/tests/services/test_telegram.py
index f82b26ddf..17164bf89 100644
--- a/src/dsmr_mqtt/tests/services/test_telegram.py
+++ b/src/dsmr_mqtt/tests/services/test_telegram.py
@@ -1,3 +1,4 @@
+import datetime
 from unittest import mock
 import json
 
@@ -86,7 +87,7 @@ def test_publish_raw_dsmr_telegram(self, queue_message_mock):
     @mock.patch("django.utils.timezone.now")
     def test_publish_json_dsmr_reading(self, now_mock, queue_message_mock):
         now_mock.return_value = timezone.make_aware(
-            timezone.datetime(2018, 1, 1), timezone=timezone.utc
+            timezone.datetime(2018, 1, 1), timezone=datetime.timezone.utc
         )
         json_settings = telegram.JSONTelegramMQTTSettings.get_solo()
         dsmr_reading = self._create_dsmrreading()
@@ -161,7 +162,7 @@ def test_publish_json_dsmr_reading(self, now_mock, queue_message_mock):
     @mock.patch("django.utils.timezone.now")
     def test_publish_split_topic_dsmr_reading(self, now_mock, queue_message_mock):
         now_mock.return_value = timezone.make_aware(
-            timezone.datetime(2018, 1, 1), timezone=timezone.utc
+            timezone.datetime(2018, 1, 1), timezone=datetime.timezone.utc
         )
         split_topic_settings = telegram.SplitTopicTelegramMQTTSettings.get_solo()
         dsmr_reading = self._create_dsmrreading()