diff --git a/Dockerfile b/Dockerfile
index 38e6e29c..7712f7a0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,6 +2,7 @@ FROM python:3.9
 
 RUN apt-get update -y && apt-get upgrade -y
 RUN apt-get install ffmpeg -y
+RUN apt-get clean && rm -rf /var/lib/apt/lists/*
 
 WORKDIR .
 COPY . .