diff --git a/s2s_pipeline.py b/s2s_pipeline.py
index ebf36ed6b67126d61d33f589a9e2a8ae3735f740..b235c6510ef86c452b01ee4f6d3e0120be131238 100644
--- a/s2s_pipeline.py
+++ b/s2s_pipeline.py
@@ -17,6 +17,7 @@ from baseHandler import BaseHandler
 from STT.lightning_whisper_mlx_handler import LightningWhisperSTTHandler
 import numpy as np
 import torch
+import nltk
 from nltk.tokenize import sent_tokenize
 from rich.console import Console
 from transformers import (