diff --git a/images/horizon/Dockerfile b/images/horizon/Dockerfile
index 2f80436..c2c63f2 100644
--- a/images/horizon/Dockerfile
+++ b/images/horizon/Dockerfile
@@ -12,7 +12,9 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-FROM registry.atmosphere.dev/library/openstack-venv-builder:main AS build
+ARG RELEASE
+
+FROM registry.atmosphere.dev/library/openstack-venv-builder:${RELEASE} AS build
 ARG HORIZON_GIT_REF=3f1f1d46e6e47a3dbe46fb023fe69ff25d6a601b
 ADD --keep-git-dir=true https://opendev.org/openstack/horizon.git#${HORIZON_GIT_REF} /src/horizon
 RUN git -C /src/horizon fetch --unshallow
@@ -49,7 +51,7 @@
         pymemcache
 EOF
 
-FROM registry.atmosphere.dev/library/openstack-python-runtime:main
+FROM registry.atmosphere.dev/library/openstack-python-runtime:${RELEASE}
 RUN <<EOF bash -xe
 apt-get update -qq
 apt-get install -qq -y --no-install-recommends \