diff --git a/Dockerfile.ddns b/Dockerfile.ddns
index 672f1dd..4d4d2c5 100644
--- a/Dockerfile.ddns
+++ b/Dockerfile.ddns
@@ -1,6 +1,8 @@
 FROM alpine
 MAINTAINER Team Lixo <lixonet@team.lixo>
 
+RUN apk add bash jq curl bind-tools
+
 WORKDIR /app
 ADD ddns/update.sh /app