diff --git a/papermerge/Dockerfile b/papermerge/Dockerfile
index 9d8e247aa..6f7392bf6 100644
--- a/papermerge/Dockerfile
+++ b/papermerge/Dockerfile
@@ -9,7 +9,8 @@ RUN \
     ################
     # Install apps #
     ################
-    apt-get update \
+    apt-get clean \
+    && apt-get update \
     && apt-get install -y --no-install-recommends \
         jq \
         curl \