diff --git a/Dockerfile b/Dockerfile
index c872b6e..2a9789a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 FROM alpine
 
-RUN apk add bash coreutils
+RUN apk add bash coreutils xxd
 
 WORKDIR /code
 COPY ./backup.sh .