diff --git a/django/contrib/gis/tests/geo3d/tests.py b/django/contrib/gis/tests/geo3d/tests.py
index f57445c4eb..a1dce9af5b 100644
--- a/django/contrib/gis/tests/geo3d/tests.py
+++ b/django/contrib/gis/tests/geo3d/tests.py
@@ -1,6 +1,6 @@
 import os
 import re
-from django.utils.unittest import TestCase
+from unittest import TestCase
 from django.contrib.gis.db.models import Union, Extent3D
 from django.contrib.gis.geos import GEOSGeometry, Point, Polygon
 from django.contrib.gis.utils import LayerMapping, LayerMapError