diff --git a/Dockerfile b/Dockerfile
index b0bcc8d..c89ae15 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,7 +15,7 @@ ENV TZ=${TZ}
 ENV USER=${APP_USER}
 
 RUN apt-get update && \
-    apt-get install \
+    apt-get -y --no-install-recommends xz-utils && \
     tzdata
 
 # add s6 overlay