diff --git a/pihole-unbound/Dockerfile b/pihole-unbound/Dockerfile
index b4da01ae..bba1ef92 100644
--- a/pihole-unbound/Dockerfile
+++ b/pihole-unbound/Dockerfile
@@ -1,5 +1,4 @@
-ARG PIHOLE_VERSION
-FROM pihole/pihole:${PIHOLE_VERSION:-latest}
+FROM pihole/pihole:2023.10.0
 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