diff --git a/Dockerfile b/Dockerfile
index acc897a5..2231ad9b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,7 +9,8 @@ RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
 RUN apt-get update && \
     apt-get install -y --no-install-recommends \
     xmlstarlet \
-    ruby-full
+    ruby-full \
+    zip
 
 RUN gem install bundler