diff --git a/Docker/Dockerfile b/Docker/Dockerfile
index 24624138a3ec2cbb7c17b728cb7c67207aa8e7af..cf33dffa7fb9cad29a1d3224c18d1833e2df0634 100644
--- a/Docker/Dockerfile
+++ b/Docker/Dockerfile
@@ -79,7 +79,9 @@ RUN export DEBIAN_FRONTEND=noninteractive && \
         python3 \
         python3-casacore \
         python3-numpy \
-        python3-scipy
+        python3-scipy && \
+    rm -rf /var/lib/apt/lists/*
+
 
 RUN mkdir /home/lofaruser/ && \ 
     groupadd -r lofaruser && \