diff --git a/pihole-unbound/Dockerfile b/pihole-unbound/Dockerfile
index 44f170c..b4da01a 100644
--- a/pihole-unbound/Dockerfile
+++ b/pihole-unbound/Dockerfile
@@ -1,11 +1,13 @@
 ARG PIHOLE_VERSION
 FROM pihole/pihole:${PIHOLE_VERSION:-latest}
-RUN apt update && apt install -y unbound
+RUN echo "deb http://deb.debian.org/debian bullseye-backports main" >> /etc/apt/sources.list
+RUN apt update && apt -t bullseye-backports install -y unbound
 
 COPY lighttpd-external.conf /etc/lighttpd/external.conf
 COPY unbound-pihole.conf /etc/unbound/unbound.conf.d/pi-hole.conf
 COPY 99-edns.conf /etc/dnsmasq.d/99-edns.conf
 RUN mkdir -p /etc/services.d/unbound
 COPY unbound-run /etc/services.d/unbound/run
+RUN chmod 774 /etc/services.d/unbound/run
 
 ENTRYPOINT ./s6-init
\ No newline at end of file
diff --git a/pihole-unbound/unbound-run b/pihole-unbound/unbound-run
index 46f2f13..5791b8b 100755
--- a/pihole-unbound/unbound-run
+++ b/pihole-unbound/unbound-run
@@ -7,7 +7,7 @@ DESC="DNS server"
 DAEMON="/usr/sbin/unbound"
 PIDFILE="/run/unbound.pid"
 
-HELPER="/usr/lib/unbound/package-helper"
+HELPER="/usr/libexec/unbound-helper"
 
 test -x $DAEMON || exit 0