diff --git a/tests/components/cast/test_media_player.py b/tests/components/cast/test_media_player.py
index d75aebe4ded..72eea4c5ff4 100644
--- a/tests/components/cast/test_media_player.py
+++ b/tests/components/cast/test_media_player.py
@@ -453,13 +453,13 @@ async def test_stop_discovery_called_on_stop(
     """Test pychromecast.stop_discovery called on shutdown."""
     # start_discovery should be called with empty config
     await async_setup_cast(hass, {})
-    await hass.async_block_till_done()
+    await hass.async_block_till_done(wait_background_tasks=True)
     assert castbrowser_mock.return_value.start_discovery.call_count == 1
 
     # stop discovery should be called on shutdown
     hass.bus.async_fire(EVENT_HOMEASSISTANT_STOP)
-    await hass.async_block_till_done()
-    await hass.async_block_till_done()
+    await hass.async_block_till_done(wait_background_tasks=True)
+    await hass.async_block_till_done(wait_background_tasks=True)
     assert castbrowser_mock.return_value.stop_discovery.call_count == 1