diff --git a/CHANGES.rst b/CHANGES.rst
index abd1a8e..b97922b 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,8 +1,14 @@
 CHANGES
 =======
 
+3.4.0 (unreleased)
+------------------
+
+- Remove hacks for previously supported Django versions. (Fixes GH-390)
+
 3.3.0 (2019.08.19)
 ------------------
+
 - Added `Choices.subset`.
 
 3.2.0 (2019.06.21)
diff --git a/model_utils/models.py b/model_utils/models.py
index c93fe2d..50a83f3 100644
--- a/model_utils/models.py
+++ b/model_utils/models.py
@@ -1,6 +1,5 @@
 from __future__ import unicode_literals
 
-import django
 from django.core.exceptions import ImproperlyConfigured
 from django.db import models, transaction, router
 from django.db.models.signals import post_save, pre_save
@@ -18,7 +17,8 @@ from model_utils.managers import (
     SoftDeletableManager,
 )
 
-from django.utils.timezone import now
+from django.db.models.functions import Now
+now = Now()
 
 
 class TimeStampedModel(models.Model):