diff --git a/Dockerfile b/Dockerfile
index 8d73284..b3b5eed 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 FROM jedisct1/alpine-runit:latest
 MAINTAINER Frank Denis
-ENV SERIAL 3
+ENV SERIAL 0
 
 ENV BUILD_DEPS   make gcc musl-dev git libevent-dev expat-dev shadow autoconf file libressl-dev
 ENV RUNTIME_DEPS bash util-linux coreutils findutils grep libressl ldns ldns-tools libevent expat libexecinfo coreutils drill
@@ -8,8 +8,8 @@ ENV RUNTIME_DEPS bash util-linux coreutils findutils grep libressl ldns ldns-too
 RUN set -x && \
     apk --update upgrade && apk add $RUNTIME_DEPS $BUILD_DEPS
 
-ENV UNBOUND_VERSION 1.7.1
-ENV UNBOUND_SHA256 56e085ef582c5372a20207de179d0edb4e541e59f87be7d4ee1d00d12008628d
+ENV UNBOUND_VERSION 1.7.2
+ENV UNBOUND_SHA256 a85fc7bb34711992cf128b2012638ebb8dc1fe15818baa381f6489240845eaa0
 ENV UNBOUND_DOWNLOAD_URL https://www.unbound.net/downloads/unbound-${UNBOUND_VERSION}.tar.gz
 
 RUN set -x && \