diff --git a/Dockerfile b/Dockerfile
index 5b389cf..dbbf2ac 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -29,7 +29,10 @@ RUN apt-get update && \
     wget https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2004/x86_64/cuda-ubuntu2004.pin && \
     mv cuda-ubuntu2004.pin /etc/apt/preferences.d/cuda-repository-pin-600  && \
     apt-key adv --fetch-keys https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2004/x86_64/7fa2af80.pub  && \
-    add-apt-repository "deb https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2004/x86_64/ /"  && \
+    add-apt-repository "deb https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2004/x86_64/ /" && \
+    rm -rf /var/lib/apt/lists/* && \
+    rm -rf /etc/apt/sources.list.d/cuda.list && \
+    rm -rf /etc/apt/sources.list.d/nvidia-ml.list && \
     apt-get update  && \
     apt-get -y install cuda && \
 #  wget -nv https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2004/x86_64/libcudnn8_8.0.5.39-1+cuda11.1_amd64.deb -O /var/tmp/libcudnn8.deb  && \