diff --git a/requirements.txt b/requirements.txt
index 420eaf5..e969935 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,3 +4,4 @@ uvicorn[standard]
 whisper_ctranslate2
 opencc
 prometheus-fastapi-instrumentator
+pydub
diff --git a/requirements_version.txt b/requirements_version.txt
index ad51e03..1851e2e 100644
--- a/requirements_version.txt
+++ b/requirements_version.txt
@@ -28,6 +28,7 @@ protobuf==4.25.0
 pycparser==2.21
 pydantic==2.5.0
 pydantic_core==2.14.1
+pydub==0.25.1
 python-dotenv==1.0.0
 python-multipart==0.0.6
 PyYAML==6.0.1