diff --git a/tests/components/demo/test_geo_location.py b/tests/components/demo/test_geo_location.py
index dd4c2022c5e19181a115b0b04af26d7cbddecfcf..7ca870bc34f62a2e1bd1b494ea6b2c76b966c188 100644
--- a/tests/components/demo/test_geo_location.py
+++ b/tests/components/demo/test_geo_location.py
@@ -1,6 +1,8 @@
 """The tests for the demo platform."""
 import unittest
 
+import pytest
+
 from homeassistant.components import geo_location
 from homeassistant.components.demo.geo_location import (
     DEFAULT_UPDATE_INTERVAL,
@@ -20,6 +22,12 @@ from tests.common import (
 CONFIG = {geo_location.DOMAIN: [{"platform": "demo"}]}
 
 
+@pytest.fixture(autouse=True)
+def mock_legacy_time(legacy_patchable_time):
+    """Make time patchable for all the tests."""
+    yield
+
+
 class TestDemoPlatform(unittest.TestCase):
     """Test the demo platform."""