diff --git a/egs/libritts/TTS/vits/infer.py b/egs/libritts/TTS/vits/infer.py
index 461da8ab6..fda07b791 100755
--- a/egs/libritts/TTS/vits/infer.py
+++ b/egs/libritts/TTS/vits/infer.py
@@ -31,7 +31,7 @@ import argparse
 import logging
 from concurrent.futures import ThreadPoolExecutor
 from pathlib import Path
-from typing import Dict, List
+from typing import List
 
 import k2
 import numpy as np
diff --git a/egs/libritts/TTS/vits/tts_datamodule.py b/egs/libritts/TTS/vits/tts_datamodule.py
index 82413c36e..e98e49c1f 100644
--- a/egs/libritts/TTS/vits/tts_datamodule.py
+++ b/egs/libritts/TTS/vits/tts_datamodule.py
@@ -28,7 +28,6 @@ import torch
 from lhotse import CutSet, Spectrogram, SpectrogramConfig, load_manifest_lazy
 from lhotse.dataset import (  # noqa F401 for PrecomputedFeatures
     CutConcatenate,
-    CutMix,
     DynamicBucketingSampler,
     PrecomputedFeatures,
     SimpleCutSampler,