diff --git a/certbot/Dockerfile b/certbot/Dockerfile
index 9079004..5810bc7 100644
--- a/certbot/Dockerfile
+++ b/certbot/Dockerfile
@@ -1,5 +1,5 @@
 FROM certbot/certbot:latest
 
 RUN apk update \
- && apk add jq curl\
+ && apk add jq curl bash\
  && rm -rf /var/cache/apk/*