diff --git a/tests/components/unifi/test_device_tracker.py b/tests/components/unifi/test_device_tracker.py
index abe12a1e243..5a12b99d10b 100644
--- a/tests/components/unifi/test_device_tracker.py
+++ b/tests/components/unifi/test_device_tracker.py
@@ -1,9 +1,8 @@
 """The tests for the UniFi Network device tracker platform."""
 from datetime import timedelta
-from unittest.mock import patch
 
 from aiounifi.models.message import MessageKey
-from freezegun.api import FrozenDateTimeFactory
+from freezegun.api import FrozenDateTimeFactory, freeze_time
 
 from homeassistant import config_entries
 from homeassistant.components.device_tracker import DOMAIN as TRACKER_DOMAIN
@@ -72,7 +71,7 @@ async def test_tracked_wireless_clients(
     # Change time to mark client as away
 
     new_time = dt_util.utcnow() + controller.option_detection_time
-    with patch("homeassistant.util.dt.utcnow", return_value=new_time):
+    with freeze_time(new_time):
         async_fire_time_changed(hass, new_time)
         await hass.async_block_till_done()
 
@@ -293,6 +292,7 @@ async def test_tracked_wireless_clients_event_source(
 async def test_tracked_devices(
     hass: HomeAssistant,
     aioclient_mock: AiohttpClientMocker,
+    freezer: FrozenDateTimeFactory,
     mock_unifi_websocket,
     mock_device_registry,
 ) -> None:
@@ -351,9 +351,9 @@ async def test_tracked_devices(
     # Change of time can mark device not_home outside of expected reporting interval
 
     new_time = dt_util.utcnow() + timedelta(seconds=90)
-    with patch("homeassistant.util.dt.utcnow", return_value=new_time):
-        async_fire_time_changed(hass, new_time)
-        await hass.async_block_till_done()
+    freezer.move_to(new_time)
+    async_fire_time_changed(hass, new_time)
+    await hass.async_block_till_done()
 
     assert hass.states.get("device_tracker.device_1").state == STATE_NOT_HOME
     assert hass.states.get("device_tracker.device_2").state == STATE_HOME
@@ -712,7 +712,7 @@ async def test_option_ssid_filter(
     await hass.async_block_till_done()
 
     new_time = dt_util.utcnow() + controller.option_detection_time
-    with patch("homeassistant.util.dt.utcnow", return_value=new_time):
+    with freeze_time(new_time):
         async_fire_time_changed(hass, new_time)
         await hass.async_block_till_done()
 
@@ -740,7 +740,7 @@ async def test_option_ssid_filter(
     # Time pass to mark client as away
 
     new_time += controller.option_detection_time
-    with patch("homeassistant.util.dt.utcnow", return_value=new_time):
+    with freeze_time(new_time):
         async_fire_time_changed(hass, new_time)
         await hass.async_block_till_done()
 
@@ -759,7 +759,7 @@ async def test_option_ssid_filter(
     await hass.async_block_till_done()
 
     new_time += controller.option_detection_time
-    with patch("homeassistant.util.dt.utcnow", return_value=new_time):
+    with freeze_time(new_time):
         async_fire_time_changed(hass, new_time)
         await hass.async_block_till_done()
 
@@ -808,7 +808,7 @@ async def test_wireless_client_go_wired_issue(
 
     # Pass time
     new_time = dt_util.utcnow() + controller.option_detection_time
-    with patch("homeassistant.util.dt.utcnow", return_value=new_time):
+    with freeze_time(new_time):
         async_fire_time_changed(hass, new_time)
         await hass.async_block_till_done()
 
@@ -877,7 +877,7 @@ async def test_option_ignore_wired_bug(
 
     # pass time
     new_time = dt_util.utcnow() + controller.option_detection_time
-    with patch("homeassistant.util.dt.utcnow", return_value=new_time):
+    with freeze_time(new_time):
         async_fire_time_changed(hass, new_time)
         await hass.async_block_till_done()
 
diff --git a/tests/components/unifi/test_sensor.py b/tests/components/unifi/test_sensor.py
index f4366b98fc3..854d136f3dd 100644
--- a/tests/components/unifi/test_sensor.py
+++ b/tests/components/unifi/test_sensor.py
@@ -4,6 +4,7 @@ from datetime import datetime, timedelta
 from unittest.mock import patch
 
 from aiounifi.models.message import MessageKey
+from freezegun.api import FrozenDateTimeFactory
 import pytest
 
 from homeassistant.components.device_tracker import DOMAIN as TRACKER_DOMAIN
@@ -429,6 +430,7 @@ async def test_bandwidth_sensors(
 async def test_uptime_sensors(
     hass: HomeAssistant,
     aioclient_mock: AiohttpClientMocker,
+    freezer: FrozenDateTimeFactory,
     mock_unifi_websocket,
     entity_registry_enabled_by_default: None,
     initial_uptime,
@@ -450,13 +452,13 @@ async def test_uptime_sensors(
     }
 
     now = datetime(2021, 1, 1, 1, 1, 0, tzinfo=dt_util.UTC)
-    with patch("homeassistant.util.dt.now", return_value=now):
-        config_entry = await setup_unifi_integration(
-            hass,
-            aioclient_mock,
-            options=options,
-            clients_response=[uptime_client],
-        )
+    freezer.move_to(now)
+    config_entry = await setup_unifi_integration(
+        hass,
+        aioclient_mock,
+        options=options,
+        clients_response=[uptime_client],
+    )
 
     assert len(hass.states.async_all()) == 2
     assert len(hass.states.async_entity_ids(SENSOR_DOMAIN)) == 1