diff --git a/tests/components/fronius/test_coordinator.py b/tests/components/fronius/test_coordinator.py
index a0e420c5b52..d4f42fadb06 100644
--- a/tests/components/fronius/test_coordinator.py
+++ b/tests/components/fronius/test_coordinator.py
@@ -1,13 +1,13 @@
 """Test the Fronius update coordinators."""
 from unittest.mock import patch
 
+from freezegun.api import FrozenDateTimeFactory
 from pyfronius import BadStatusError, FroniusError
 
 from homeassistant.components.fronius.coordinator import (
     FroniusInverterUpdateCoordinator,
 )
 from homeassistant.core import HomeAssistant
-from homeassistant.util import dt as dt_util
 
 from . import mock_responses, setup_fronius_integration
 
@@ -16,7 +16,9 @@ from tests.test_util.aiohttp import AiohttpClientMocker
 
 
 async def test_adaptive_update_interval(
-    hass: HomeAssistant, aioclient_mock: AiohttpClientMocker
+    hass: HomeAssistant,
+    aioclient_mock: AiohttpClientMocker,
+    freezer: FrozenDateTimeFactory,
 ) -> None:
     """Test coordinators changing their update interval when inverter not available."""
     with patch("pyfronius.Fronius.current_inverter_data") as mock_inverter_data:
@@ -25,9 +27,8 @@ async def test_adaptive_update_interval(
         mock_inverter_data.assert_called_once()
         mock_inverter_data.reset_mock()
 
-        async_fire_time_changed(
-            hass, dt_util.utcnow() + FroniusInverterUpdateCoordinator.default_interval
-        )
+        freezer.tick(FroniusInverterUpdateCoordinator.default_interval)
+        async_fire_time_changed(hass, None)
         await hass.async_block_till_done()
         mock_inverter_data.assert_called_once()
         mock_inverter_data.reset_mock()
@@ -35,33 +36,28 @@ async def test_adaptive_update_interval(
         mock_inverter_data.side_effect = FroniusError()
         # first 3 bad requests at default interval - 4th has different interval
         for _ in range(3):
-            async_fire_time_changed(
-                hass,
-                dt_util.utcnow() + FroniusInverterUpdateCoordinator.default_interval,
-            )
+            freezer.tick(FroniusInverterUpdateCoordinator.default_interval)
+            async_fire_time_changed(hass, None)
             await hass.async_block_till_done()
         assert mock_inverter_data.call_count == 3
         mock_inverter_data.reset_mock()
 
-        async_fire_time_changed(
-            hass, dt_util.utcnow() + FroniusInverterUpdateCoordinator.error_interval
-        )
+        freezer.tick(FroniusInverterUpdateCoordinator.error_interval)
+        async_fire_time_changed(hass, None)
         await hass.async_block_till_done()
         assert mock_inverter_data.call_count == 1
         mock_inverter_data.reset_mock()
 
         mock_inverter_data.side_effect = None
         # next successful request resets to default interval
-        async_fire_time_changed(
-            hass, dt_util.utcnow() + FroniusInverterUpdateCoordinator.error_interval
-        )
+        freezer.tick(FroniusInverterUpdateCoordinator.error_interval)
+        async_fire_time_changed(hass, None)
         await hass.async_block_till_done()
         mock_inverter_data.assert_called_once()
         mock_inverter_data.reset_mock()
 
-        async_fire_time_changed(
-            hass, dt_util.utcnow() + FroniusInverterUpdateCoordinator.default_interval
-        )
+        freezer.tick(FroniusInverterUpdateCoordinator.default_interval)
+        async_fire_time_changed(hass, None)
         await hass.async_block_till_done()
         mock_inverter_data.assert_called_once()
         mock_inverter_data.reset_mock()
@@ -70,10 +66,8 @@ async def test_adaptive_update_interval(
         mock_inverter_data.side_effect = BadStatusError("mock_endpoint", 8)
         # first 3 requests at default interval - 4th has different interval
         for _ in range(3):
-            async_fire_time_changed(
-                hass,
-                dt_util.utcnow() + FroniusInverterUpdateCoordinator.default_interval,
-            )
+            freezer.tick(FroniusInverterUpdateCoordinator.default_interval)
+            async_fire_time_changed(hass, None)
             await hass.async_block_till_done()
         # BadStatusError does 3 silent retries for inverter endpoint * 3 request intervals = 9
         assert mock_inverter_data.call_count == 9