diff --git a/Dockerfile b/Dockerfile
index f0e3b7d..ab81ae8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 FROM alpine
 MAINTAINER Alper Kanat <tunix@raptiye.org>
-RUN apk --no-cache add curl jq
+RUN apk --no-cache add curl jq bash
 COPY dyndns.sh /
 USER nobody
 ENTRYPOINT exec /dyndns.sh