diff --git a/capone/tests/settings.py b/capone/tests/settings.py
index 6e0af13..d1a5936 100644
--- a/capone/tests/settings.py
+++ b/capone/tests/settings.py
@@ -44,3 +44,5 @@
     'django.contrib.messages.middleware.MessageMiddleware',
 )
 SESSION_ENGINE = 'django.contrib.sessions.backends.db'
+
+USE_TZ = True
diff --git a/capone/tests/test_assert_transaction_in_ledgers_for_amounts_with_evidence.py b/capone/tests/test_assert_transaction_in_ledgers_for_amounts_with_evidence.py
index 5f9ac35..33dfd7d 100644
--- a/capone/tests/test_assert_transaction_in_ledgers_for_amounts_with_evidence.py
+++ b/capone/tests/test_assert_transaction_in_ledgers_for_amounts_with_evidence.py
@@ -1,8 +1,8 @@
-from datetime import datetime
 from datetime import timedelta
 from decimal import Decimal
 
 from django.test import TestCase
+from django.utils import timezone
 
 from capone.api.actions import credit
 from capone.api.actions import debit
@@ -22,8 +22,8 @@ def test_transaction_fields(self):
         """
         Test filtering by `posted_timestamp`, `notes`, `type`, and `user`.
         """
-        time = datetime.now()
-        wrong_time = datetime.now() - timedelta(days=1)
+        time = timezone.now()
+        wrong_time = timezone.now() - timedelta(days=1)
         user1 = UserFactory()
         user2 = UserFactory()
         credit_card_transaction = CreditCardTransactionFactory()
diff --git a/capone/tests/test_create_transaction.py b/capone/tests/test_create_transaction.py
index 538f177..e0983e9 100644
--- a/capone/tests/test_create_transaction.py
+++ b/capone/tests/test_create_transaction.py
@@ -1,8 +1,8 @@
-from datetime import datetime
 from decimal import Decimal as D
 from unittest import mock
 
 from django.test import TestCase
+from django.utils import timezone
 
 from capone.exceptions import ExistingLedgerEntriesException
 from capone.exceptions import NoLedgerEntriesException
@@ -153,7 +153,7 @@ def test_using_ledgers_for_reconciliation(self):
         )
 
     def test_setting_posted_timestamp(self):
-        POSTED_DATETIME = datetime(2016, 2, 7, 11, 59)
+        POSTED_DATETIME = timezone.now()
         order = OrderFactory(amount=self.AMOUNT)
 
         txn_recognize = create_transaction(
diff --git a/capone/tests/test_factories.py b/capone/tests/test_factories.py
index 47e7362..a73bcd3 100644
--- a/capone/tests/test_factories.py
+++ b/capone/tests/test_factories.py
@@ -1,7 +1,7 @@
-from datetime import datetime
 from decimal import Decimal
 
 from django.test import TestCase
+from django.utils import timezone
 
 from capone.api.actions import credit
 from capone.api.actions import debit
@@ -74,7 +74,7 @@ def test_custom_fields(self):
         """
         Test setting fields `posted_timestamp`, `notes`, `type`, and `user`.
         """
-        time = datetime.now()
+        time = timezone.now()
         FIELDS_TO_VALUES = [
             ('posted_timestamp', time),
             ('notes', 'booga'),
diff --git a/capone/tests/test_transaction_model.py b/capone/tests/test_transaction_model.py
index 3d41ba7..e3df56b 100644
--- a/capone/tests/test_transaction_model.py
+++ b/capone/tests/test_transaction_model.py
@@ -1,8 +1,8 @@
 # -*- coding: utf-8 -*-
-from datetime import datetime
 from decimal import Decimal
 
 from django.test import TestCase
+from django.utils import timezone
 
 from capone.api.actions import create_transaction
 from capone.api.actions import credit
@@ -27,7 +27,7 @@ class TransactionBase(TestCase):
     def setUp(self):
         self.user1 = UserFactory()
         self.user2 = UserFactory()
-        self.posted_timestamp = datetime.now()
+        self.posted_timestamp = timezone.now()
 
 
 class TestStrMethods(TestCase):
@@ -102,7 +102,7 @@ class TestSettingExplicitTimestampField(TransactionBase):
     def test_setting_explicit_timestamp_field(self):
         transaction = TransactionFactory()
         old_posted_timestamp = transaction.posted_timestamp
-        transaction.posted_timestamp = datetime.now()
+        transaction.posted_timestamp = timezone.now()
         transaction.save()
         self.assertNotEqual(
             old_posted_timestamp,
diff --git a/capone/tests/test_void.py b/capone/tests/test_void.py
index 60d3802..e27e194 100644
--- a/capone/tests/test_void.py
+++ b/capone/tests/test_void.py
@@ -1,7 +1,7 @@
-from datetime import datetime
 from decimal import Decimal as D
 
 from django.test import TestCase
+from django.utils import timezone
 
 from capone.api.actions import create_transaction
 from capone.api.actions import credit
@@ -182,7 +182,7 @@ def test_given_timestamp(self):
             LedgerEntry(amount=credit(amount), ledger=self.rev_ledger),
         ])
 
-        now = datetime.now()
+        now = timezone.now()
         void_txn = void_transaction(
             charge_txn, self.creation_user,
             posted_timestamp=now)