diff --git a/sqlalchemy_utils/models.py b/sqlalchemy_utils/models.py
index 81fa4541..66529fa0 100644
--- a/sqlalchemy_utils/models.py
+++ b/sqlalchemy_utils/models.py
@@ -22,8 +22,8 @@ class SomeModel(Base, Timestamp):
             id = sa.Column(sa.Integer, primary_key=True)
     """
 
-    created = sa.Column(sa.DateTime, default=datetime.now(timezone.utc), nullable=False)
-    updated = sa.Column(sa.DateTime, default=datetime.now(timezone.utc), nullable=False)
+    created = sa.Column(sa.DateTime(timezone=True), default=datetime.now(timezone.utc), nullable=False)
+    updated = sa.Column(sa.DateTime(timezone=True), default=datetime.now(timezone.utc), nullable=False)
 
 
 @sa.event.listens_for(Timestamp, 'before_update', propagate=True)