diff --git a/tests/basic/test_voice.py b/tests/basic/test_voice.py
index e367f54ae..7dc288a43 100644
--- a/tests/basic/test_voice.py
+++ b/tests/basic/test_voice.py
@@ -1,52 +1,59 @@
 import os
 import queue
-from unittest.mock import patch, MagicMock
+from unittest.mock import MagicMock, patch
 
 import numpy as np
 import pytest
 
 from aider.voice import SoundDeviceError, Voice
 
+
 # Mock the entire sounddevice module
 @pytest.fixture
 def mock_sounddevice():
-    with patch('aider.voice.sounddevice') as mock_sd:
+    with patch("aider.voice.sounddevice") as mock_sd:
         mock_sd.query_devices.return_value = [
             {"name": "test_device", "max_input_channels": 2},
             {"name": "another_device", "max_input_channels": 1},
         ]
         yield mock_sd
 
+
 @pytest.fixture
 def mock_soundfile():
-    with patch('aider.voice.sf') as mock_sf:
+    with patch("aider.voice.sf") as mock_sf:
         yield mock_sf
 
+
 def test_voice_init_default_device(mock_sounddevice):
     voice = Voice()
     assert voice.device_id is None
     assert voice.audio_format == "wav"
     assert voice.sd == mock_sounddevice
 
+
 def test_voice_init_specific_device(mock_sounddevice):
     voice = Voice(device_name="test_device")
     assert voice.device_id == 0
     assert voice.sd == mock_sounddevice
 
+
 def test_voice_init_invalid_device(mock_sounddevice):
     with pytest.raises(ValueError) as exc:
         Voice(device_name="nonexistent_device")
     assert "Device" in str(exc.value)
     assert "not found" in str(exc.value)
 
+
 def test_voice_init_invalid_format():
-    with patch('aider.voice.sf', MagicMock()):  # Need to mock sf to avoid SoundDeviceError
+    with patch("aider.voice.sf", MagicMock()):  # Need to mock sf to avoid SoundDeviceError
         with pytest.raises(ValueError) as exc:
             Voice(audio_format="invalid")
         assert "Unsupported audio format" in str(exc.value)
 
+
 def test_callback_processing():
-    with patch('aider.voice.sf', MagicMock()):  # Need to mock sf to avoid SoundDeviceError
+    with patch("aider.voice.sf", MagicMock()):  # Need to mock sf to avoid SoundDeviceError
         voice = Voice()
         voice.q = queue.Queue()
 
@@ -63,8 +70,9 @@ def test_callback_processing():
         # Verify data is queued
         assert not voice.q.empty()
 
+
 def test_get_prompt():
-    with patch('aider.voice.sf', MagicMock()):  # Need to mock sf to avoid SoundDeviceError
+    with patch("aider.voice.sf", MagicMock()):  # Need to mock sf to avoid SoundDeviceError
         voice = Voice()
         voice.start_time = os.times().elapsed
         voice.pct = 0.5  # 50% volume level
@@ -75,16 +83,20 @@ def test_get_prompt():
         assert "█" in prompt  # Should contain some filled blocks
         assert "░" in prompt  # Should contain some empty blocks
 
+
 def test_record_and_transcribe_keyboard_interrupt():
-    with patch('aider.voice.sf', MagicMock()):
+    with patch("aider.voice.sf", MagicMock()):
         voice = Voice()
-        with patch.object(voice, 'raw_record_and_transcribe', side_effect=KeyboardInterrupt()):
+        with patch.object(voice, "raw_record_and_transcribe", side_effect=KeyboardInterrupt()):
             result = voice.record_and_transcribe()
             assert result is None
 
+
 def test_record_and_transcribe_device_error():
-    with patch('aider.voice.sf', MagicMock()):
+    with patch("aider.voice.sf", MagicMock()):
         voice = Voice()
-        with patch.object(voice, 'raw_record_and_transcribe', side_effect=SoundDeviceError("Test error")):
+        with patch.object(
+            voice, "raw_record_and_transcribe", side_effect=SoundDeviceError("Test error")
+        ):
             result = voice.record_and_transcribe()
             assert result is None