diff --git a/images/magnum/Dockerfile b/images/magnum/Dockerfile
index e10bae9..4d42787 100644
--- a/images/magnum/Dockerfile
+++ b/images/magnum/Dockerfile
@@ -3,7 +3,7 @@
 
 ARG RELEASE
 
-FROM registry.atmosphere.dev/library/ubuntu:${RELEASE} AS helm
+FROM harbor.atmosphere.dev/library/ubuntu:${RELEASE} AS helm
 ARG TARGETOS
 ARG TARGETARCH
 ARG HELM_VERSION=3.14.0
@@ -11,7 +11,7 @@
 RUN tar -xzf /helm.tar.gz
 RUN mv /${TARGETOS}-${TARGETARCH}/helm /usr/bin/helm
 
-FROM registry.atmosphere.dev/library/openstack-venv-builder:${RELEASE} AS build
+FROM harbor.atmosphere.dev/library/openstack-venv-builder:${RELEASE} AS build
 ARG MAGNUM_GIT_REF=0ee979099a01ae2c8b1b5d6757897a8993e4e34c
 ADD --keep-git-dir=true https://opendev.org/openstack/magnum.git#${MAGNUM_GIT_REF} /src/magnum
 RUN git -C /src/magnum fetch --unshallow
@@ -24,7 +24,7 @@
         magnum-cluster-api==0.24.0
 EOF
 
-FROM registry.atmosphere.dev/library/openstack-python-runtime:${RELEASE}
+FROM harbor.atmosphere.dev/library/openstack-python-runtime:${RELEASE}
 RUN <<EOF bash -xe
 apt-get update -qq
 apt-get install -qq -y --no-install-recommends \