diff --git a/Dockerfile b/Dockerfile
index 82aa084..43963f3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,6 +16,7 @@ RUN set -eux && \
         man \
         less \
         bind9-dnsutils \
+        unzip \
     && \
     rm -rf /var/lib/apt/lists/* && \
     rm /etc/ssh/ssh_host_*key* && \