diff --git a/Dockerfile b/Dockerfile
index 786d96b..6f4efdf 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM lsiobase/mono
+FROM lsiobase/xenial
 MAINTAINER saarg
 
 # package versions
@@ -16,9 +16,15 @@ ENV HOME /config
 
 # install runtime dependencies
 RUN \
+ apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF && \
+ echo "deb http://download.mono-project.com/repo/ubuntu xenial main" | tee /etc/apt/sources.list.d/mono-official.list && \
  apt-get update && \
  apt-get install -y \
-	cron && \
+	cron \
+	libmono-system-data4.0-cil \
+	libmono-system-web4.0-cil \
+	mono-runtime \
+	unzip && \
 
 # install webgrab
  WEBGRAB_BRANCH=${WEBGRAB_VER%.0} && \
diff --git a/root/defaults/wg-cron b/root/defaults/wg-cron
index 36d2daa..03bf3e5 100644
--- a/root/defaults/wg-cron
+++ b/root/defaults/wg-cron
@@ -1 +1 @@
-2 3 * * * /defaults/update.sh
+2 3 * * * s6-setuidgid abc /bin/bash /defaults/update.sh
diff --git a/root/etc/cont-init.d/30-config b/root/etc/cont-init.d/30-config
index b3ac100..d74ea4f 100644
--- a/root/etc/cont-init.d/30-config
+++ b/root/etc/cont-init.d/30-config
@@ -9,7 +9,7 @@
 # add cron file for running webgrab+plus
 [[ ! -e /config/wg-cron ]] && \
 	cp /defaults/wg-cron /config/wg-cron
-crontab -u abc /config/wg-cron
+crontab /config/wg-cron
 
 # permissions
 chown -R abc:abc \
diff --git a/root/etc/services.d/cron/run b/root/etc/services.d/cron/run
index ca85a24..791665d 100644
--- a/root/etc/services.d/cron/run
+++ b/root/etc/services.d/cron/run
@@ -1,3 +1,3 @@
 #!/usr/bin/with-contenv bash
 
-/usr/sbin/cron -f -L 0
+/usr/sbin/cron -f -L 1