diff --git a/Dockerfile b/Dockerfile
index df91cea..871f296 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 FROM recoll
 
-RUN apt-get -y install breeze-icon-theme python3-venv
+RUN apt-get update && apt-get -y install breeze-icon-theme python3-venv && apt-get clean
 
 ARG SQUIRREL_VERSION=0.3.1