diff --git a/doc/source/admin/image-building.rst b/doc/source/admin/image-building.rst
index d249008b9e..793367a92f 100644
--- a/doc/source/admin/image-building.rst
+++ b/doc/source/admin/image-building.rst
@@ -683,23 +683,16 @@ Red Hat
 
 Kolla allows the operator to build containers using custom repos.
 The repos are accepted as a list of comma separated values and can be in the
-form of ``.repo``, ``.rpm``, or a url. See examples below.
-
-To use current RDO packages (aka Delorean or DLRN), update ``rpm_setup_config``
-in ``kolla-build.conf``:
-
-.. path /etc/kolla/kolla-build.conf
-.. code-block:: ini
-
-   rpm_setup_config = https://trunk.rdoproject.org/centos8/current/delorean.repo,https://trunk.rdoproject.org/centos8/delorean-deps.repo
+form of ``.repo``, ``.rpm``, or a url.
 
 If specifying a ``.repo`` file, each ``.repo`` file will need to exist in the
-same directory as the base Dockerfile (``kolla/docker/base``):
+same directory as the base Dockerfile (``kolla/docker/base``) or you need to
+specify a url:
 
 .. path kolla/docker/base
 .. code-block:: ini
 
-   rpm_setup_config = epel.repo,delorean.repo,delorean-deps.repo
+   rpm_setup_config = epel.repo,https://remote-server.com/your-repo.repo
 
 Debian / Ubuntu
 ^^^^^^^^^^^^^^^
diff --git a/doc/source/contributor/release-management.rst b/doc/source/contributor/release-management.rst
index 460fac010c..441bf39077 100644
--- a/doc/source/contributor/release-management.rst
+++ b/doc/source/contributor/release-management.rst
@@ -152,11 +152,6 @@ R-8: Switch images to current release
 .. note:: Debian does not provide repositories for the in-development release
           until much later in the cycle.
 
-* [kolla] Switch CentOS images to use the current in-development release
-  master RDO Delorean repository
-
-  * example: https://review.opendev.org/c/openstack/kolla/+/804269
-
 * [kolla] Switch Ubuntu images to use the current in-development release
   Ubuntu Cloud Archive (UCA) repository
 
@@ -237,11 +232,6 @@ Prior to creating an RC1 release candidate:
 
   * example: TODO
 
-* [kolla] Switch CentOS images to use the current in-development release
-  stable RDO Delorean repository
-
-  * example: https://review.opendev.org/c/openstack/kolla/+/787339
-
 R-0: Kolla & Kolla Ansible RC1 & stable branch creation
 -------------------------------------------------------
 
@@ -407,13 +397,6 @@ Several tasks are required to finalise the stable branch for release.
 
   * example: https://review.opendev.org/c/openstack/kolla-ansible/+/788292
 
-* [kolla] Switch CentOS images to use the CentOS Cloud SIG repository for the
-  new release
-
-  .. note:: This needs to be done on the stable branch.
-
-  * example: https://review.opendev.org/c/openstack/kolla/+/788490
-
 * [kolla] Switch Debian images to use the Debian OpenStack repository
   for the new release
 
diff --git a/docker/base/Dockerfile.j2 b/docker/base/Dockerfile.j2
index 638aa8a684..0191de53a2 100644
--- a/docker/base/Dockerfile.j2
+++ b/docker/base/Dockerfile.j2
@@ -39,6 +39,9 @@ ENV PS1="$(tput bold)($(printenv KOLLA_SERVICE_NAME))$(tput sgr0)[$(id -un)@$(ho
 # enables to provide repo overrides at a later date in a simple fashion if we
 # desire such functionality.  I think we will :)
 
+ENV KOLLA_RPM_OVS_VERSION=3.5 \
+    KOLLA_RPM_OVN_VERSION=25.03
+
 RUN cat /tmp/kolla_bashrc >> /etc/bashrc \
     && sed -i 's|^\(override_install_langs=.*\)|# \1|' /etc/dnf/dnf.conf
 
@@ -142,29 +145,15 @@ RUN rm -f /etc/rpm/macros.image-language-conf \
 {% set base_centos_yum_repos_to_enable = [
 ] %}
 
-# FIXME(hrw): entries not starting with 'centos-' (and 'centos-nfv-ovs') are
-# from delorean or rdo-release-* package
-# https://review.rdoproject.org/r/c/rdo-infra/ansible-role-dlrn/+/33241
 {% set base_centos_yum_repos_to_disable = [
     'centos-ceph-squid',
     'centos-nfv-openvswitch',
-    'centos10-nfv-ovs',
-    'centos10-rabbitmq',
-    'centos10-storage',
     'epel',
     'influxdb',
     'opensearch-3.x',
     'opensearch-dashboards-3.x',
 ] %}
 
-{% if base_arch == 'aarch64' %}
-
-{# NOTE(hrw): delorean-deps.repo may force x86-64 repos #}
-
-RUN sed -i -e "s/x86_64/aarch64/g" /etc/yum.repos.d/delorean-deps.repo
-
-{% endif %}
-
 RUN {{ macros.install_packages(base_centos_yum_repo_packages | customizable("centos_yum_repo_packages"), chain=True, clean=False) }}
 
 {%- for repo in base_centos_yum_repos_to_enable | customizable('centos_yum_repos_to_enable') %} && dnf config-manager --enable {{ repo }} {% endfor -%}
@@ -207,7 +196,9 @@ RUN {{ macros.install_packages(base_centos_yum_repo_packages | customizable("cen
 ] %}
 
 # Install base packages
+{{ macros.enable_extra_repos(['epel']) }}
 {{ macros.install_packages( base_centos_packages | customizable("centos_packages") | customizable("centos_binary_packages") | customizable("centos_source_packages") ) }}
+{{ macros.disable_extra_repos(['epel']) }}
 
 {# endif for base_package_type rpm #}
 {% elif base_package_type == 'deb' %}
diff --git a/docker/kolla-toolbox/Dockerfile.j2 b/docker/kolla-toolbox/Dockerfile.j2
index 042d98f16d..ca4b8601d6 100644
--- a/docker/kolla-toolbox/Dockerfile.j2
+++ b/docker/kolla-toolbox/Dockerfile.j2
@@ -13,7 +13,7 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
 {{ macros.configure_user(name='ansible') }}
 {{ macros.configure_user(name='rabbitmq') }}
 
-{{ macros.enable_extra_repos(['crb', 'erlang', 'openvswitch', 'rabbitmq']) }}
+{{ macros.enable_extra_repos(['crb', 'epel', 'erlang', 'openvswitch', 'rabbitmq']) }}
 
 {% block rabbitmq_apt_preferences %}
 {% if base_package_type == 'deb' %}
@@ -34,7 +34,7 @@ COPY apt_preferences_rabbitmq.{{ base_distro }} /etc/apt/preferences.d/rabbitmq
         'make',
         'openssh-clients',
         'openssl-devel',
-        'openvswitch',
+        'openvswitch${KOLLA_RPM_OVS_VERSION}',
         'python3',
         'python3-devel',
         'rabbitmq-server-4.1.*'
diff --git a/docker/kuryr/kuryr-libnetwork/Dockerfile.j2 b/docker/kuryr/kuryr-libnetwork/Dockerfile.j2
index 6d0bed487b..bbc1d0801e 100644
--- a/docker/kuryr/kuryr-libnetwork/Dockerfile.j2
+++ b/docker/kuryr/kuryr-libnetwork/Dockerfile.j2
@@ -12,7 +12,7 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
 {% if base_package_type == 'rpm' %}
 
     {% set kuryr_libnetwork_packages = [
-        'openvswitch'
+        'openvswitch${KOLLA_RPM_OVS_VERSION}'
     ] %}
 
 {% elif base_package_type == 'deb' %}
diff --git a/docker/manila/manila-base/Dockerfile.j2 b/docker/manila/manila-base/Dockerfile.j2
index 0580cccbc3..fde3989dfd 100644
--- a/docker/manila/manila-base/Dockerfile.j2
+++ b/docker/manila/manila-base/Dockerfile.j2
@@ -12,7 +12,7 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
 
 {% if base_package_type == 'rpm' %}
 
-    {% set manila_base_packages = ['openvswitch'] %}
+    {% set manila_base_packages = ['openvswitch${KOLLA_RPM_OVS_VERSION}'] %}
 
 {% elif base_package_type == 'deb' %}
 
diff --git a/docker/neutron/neutron-base/Dockerfile.j2 b/docker/neutron/neutron-base/Dockerfile.j2
index 267dac3fa7..3e4ef5a152 100644
--- a/docker/neutron/neutron-base/Dockerfile.j2
+++ b/docker/neutron/neutron-base/Dockerfile.j2
@@ -24,8 +24,8 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
         'iputils',
         'keepalived',
         'net-tools',
-        'openvswitch',
-        'python3-openvswitch',
+        'openvswitch${KOLLA_RPM_OVS_VERSION}',
+        'python3-openvswitch${KOLLA_RPM_OVS_VERSION}',
         'radvd',
         'uuid'
     ] %}
diff --git a/docker/nova/nova-base/Dockerfile.j2 b/docker/nova/nova-base/Dockerfile.j2
index 7027479767..747393944b 100644
--- a/docker/nova/nova-base/Dockerfile.j2
+++ b/docker/nova/nova-base/Dockerfile.j2
@@ -13,8 +13,8 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
 {% if base_package_type == 'rpm' %}
 
     {% set nova_base_packages = [
-            'openvswitch',
-            'python3-openvswitch'
+            'openvswitch${KOLLA_RPM_OVS_VERSION}',
+            'python3-openvswitch${KOLLA_RPM_OVS_VERSION}'
     ] %}
     {% if base_arch == 'x86_64' %}
         {% set nova_base_packages = nova_base_packages + [
diff --git a/docker/nova/nova-libvirt/Dockerfile.j2 b/docker/nova/nova-libvirt/Dockerfile.j2
index 2942ede41f..ea165b1005 100644
--- a/docker/nova/nova-libvirt/Dockerfile.j2
+++ b/docker/nova/nova-libvirt/Dockerfile.j2
@@ -23,7 +23,7 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
         'libvirt-daemon-config-nwfilter',
         'libvirt-daemon-driver-nwfilter',
         'libvirt-daemon-driver-nodedev',
-        'openvswitch',
+        'openvswitch${KOLLA_RPM_OVS_VERSION}',
         'qemu-img',
         'qemu-kvm',
         'swtpm',
diff --git a/docker/octavia/octavia-base/Dockerfile.j2 b/docker/octavia/octavia-base/Dockerfile.j2
index e036a4af7d..5c03274704 100644
--- a/docker/octavia/octavia-base/Dockerfile.j2
+++ b/docker/octavia/octavia-base/Dockerfile.j2
@@ -10,9 +10,19 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
 {{ macros.enable_extra_repos(['openvswitch']) }}
 {{ macros.configure_user(name='octavia') }}
 
-{% set octavia_base_packages = [
-    'python3-openvswitch'
-] %}
+{% if base_package_type == 'rpm' %}
+
+    {% set octavia_base_packages = [
+        'python3-openvswitch${KOLLA_RPM_OVS_VERSION}'
+    ] %}
+
+{% elif base_package_type == 'deb' %}
+
+    {% set octavia_base_packages = [
+        'python3-openvswitch'
+    ] %}
+
+{% endif %}
 
 {{ macros.install_packages(octavia_base_packages | customizable("packages")) }}
 
diff --git a/docker/openstack-base/Dockerfile.j2 b/docker/openstack-base/Dockerfile.j2
index 01dadfcdd8..21fe573d23 100644
--- a/docker/openstack-base/Dockerfile.j2
+++ b/docker/openstack-base/Dockerfile.j2
@@ -7,7 +7,7 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
 
 {% import "macros.j2" as macros with context %}
 
-{{ macros.enable_extra_repos(['crb']) }}
+{{ macros.enable_extra_repos(['crb', 'epel']) }}
 
 {% if base_package_type == 'rpm' %}
     {% set openstack_base_packages = [
diff --git a/docker/openvswitch/openvswitch-base/Dockerfile.j2 b/docker/openvswitch/openvswitch-base/Dockerfile.j2
index 7f79cb8188..1a40e846ea 100644
--- a/docker/openvswitch/openvswitch-base/Dockerfile.j2
+++ b/docker/openvswitch/openvswitch-base/Dockerfile.j2
@@ -14,16 +14,14 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
 {% if base_package_type == 'rpm' %}
     {% set openvswitch_base_packages = [
         'libibverbs',
-        'openvswitch',
-        'python3-netifaces',
-        'python3-openvswitch',
+        'openvswitch${KOLLA_RPM_OVS_VERSION}',
+        'python3-openvswitch${KOLLA_RPM_OVS_VERSION}',
         'tcpdump'
     ] %}
 {% elif base_package_type == 'deb' %}
     {% set openvswitch_base_packages = [
         'openvswitch-switch',
         'python3-openvswitch',
-        'python3-netifaces',
         'tcpdump'
     ] %}
 {% endif %}
diff --git a/docker/ovn/ovn-base/Dockerfile.j2 b/docker/ovn/ovn-base/Dockerfile.j2
index 83e1c8dc83..0871383d3e 100644
--- a/docker/ovn/ovn-base/Dockerfile.j2
+++ b/docker/ovn/ovn-base/Dockerfile.j2
@@ -9,7 +9,7 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
 
 {% if base_package_type == 'rpm' %}
     {% set ovn_base_packages = [
-        'openvswitch-ovn-common',
+        'ovn${KOLLA_RPM_OVN_VERSION}',
     ] %}
 
 {% elif base_package_type == 'deb' %}
diff --git a/docker/ovn/ovn-controller/Dockerfile.j2 b/docker/ovn/ovn-controller/Dockerfile.j2
index c8ef96b24b..8dfcb163d3 100644
--- a/docker/ovn/ovn-controller/Dockerfile.j2
+++ b/docker/ovn/ovn-controller/Dockerfile.j2
@@ -9,7 +9,7 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
 
 {% if base_package_type == 'rpm' %}
     {% set ovn_controller_packages = [
-        'openvswitch-ovn-host'
+        'ovn${KOLLA_RPM_OVN_VERSION}-host'
     ] %}
 
 {% elif base_package_type == 'deb' %}
diff --git a/docker/ovn/ovn-nb-db-server/Dockerfile.j2 b/docker/ovn/ovn-nb-db-server/Dockerfile.j2
index cbd7ca01dd..05d99d437c 100644
--- a/docker/ovn/ovn-nb-db-server/Dockerfile.j2
+++ b/docker/ovn/ovn-nb-db-server/Dockerfile.j2
@@ -9,7 +9,7 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
 
 {% if base_package_type == 'rpm' %}
     {% set ovn_nb_db_server_packages = [
-        'openvswitch-ovn-central',
+        'ovn${KOLLA_RPM_OVN_VERSION}-central',
     ] %}
 
 {% elif base_package_type == 'deb' %}
diff --git a/docker/ovn/ovn-northd/Dockerfile.j2 b/docker/ovn/ovn-northd/Dockerfile.j2
index 3a151e0b86..2d1a873dc4 100644
--- a/docker/ovn/ovn-northd/Dockerfile.j2
+++ b/docker/ovn/ovn-northd/Dockerfile.j2
@@ -9,7 +9,7 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
 
 {% if base_package_type == 'rpm' %}
     {% set ovn_northd_packages = [
-        'openvswitch-ovn-central',
+        'ovn${KOLLA_RPM_OVN_VERSION}-central',
     ] %}
 
 {% elif base_package_type == 'deb' %}
diff --git a/docker/ovn/ovn-sb-db-server/Dockerfile.j2 b/docker/ovn/ovn-sb-db-server/Dockerfile.j2
index 07f8349934..96d27ce1fd 100644
--- a/docker/ovn/ovn-sb-db-server/Dockerfile.j2
+++ b/docker/ovn/ovn-sb-db-server/Dockerfile.j2
@@ -9,7 +9,7 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
 
 {% if base_package_type == 'rpm' %}
     {% set ovn_sb_db_server_packages = [
-        'openvswitch-ovn-central',
+        'ovn${KOLLA_RPM_OVN_VERSION}-central',
     ] %}
 
 {% elif base_package_type == 'deb' %}
diff --git a/docker/zun/zun-cni-daemon/Dockerfile.j2 b/docker/zun/zun-cni-daemon/Dockerfile.j2
index 02cc9b2bef..3534f8f3e6 100644
--- a/docker/zun/zun-cni-daemon/Dockerfile.j2
+++ b/docker/zun/zun-cni-daemon/Dockerfile.j2
@@ -10,7 +10,7 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
 {% if base_package_type == 'rpm' %}
 
     {% set zun_cni_daemon_packages = [
-        'openvswitch'
+        'openvswitch${KOLLA_RPM_OVS_VERSION}'
     ] %}
 
 {% elif base_package_type == 'deb' %}
diff --git a/kolla/common/config.py b/kolla/common/config.py
index 8e9175ae86..aec1e9d8c4 100644
--- a/kolla/common/config.py
+++ b/kolla/common/config.py
@@ -39,10 +39,6 @@ DISTRO_PRETTY_NAME = {
 }
 OPENSTACK_RELEASE = 'master'
 
-# This is noarch repository so we will use it on all architectures
-DELOREAN_DEPS = "https://trunk.rdoproject.org/centos10-master/" \
-    "delorean-deps.repo"
-
 # TODO(mandre) check for file integrity instead of downloading from an HTTPS
 # source
 TARBALLS_BASE = "https://tarballs.opendev.org"
@@ -283,7 +279,7 @@ _BASE_OPTS = [
                help=('Set the package type of the distro. If not set then '
                      'the packaging type is set to "rpm" if a RHEL based '
                      'distro and "deb" if a Debian based distro.')),
-    cfg.ListOpt('rpm_setup_config', default=[DELOREAN_DEPS],
+    cfg.ListOpt('rpm_setup_config', default=[],
                 help=('Comma separated list of .rpm or .repo file(s) '
                       'or URL(s) to install before building containers')),
     cfg.StrOpt('apt_sources_list', help=('Path to custom sources.list')),
diff --git a/releasenotes/notes/drop-delorean-c0bd3229162faef0.yaml b/releasenotes/notes/drop-delorean-c0bd3229162faef0.yaml
new file mode 100644
index 0000000000..069419a2ba
--- /dev/null
+++ b/releasenotes/notes/drop-delorean-c0bd3229162faef0.yaml
@@ -0,0 +1,5 @@
+---
+upgrade:
+  - |
+    Drops requirement to use ``Delorean/CentOS Cloud SIG`` repositories in
+    rpm-based images.
diff --git a/tests/templates/template_overrides.j2 b/tests/templates/template_overrides.j2
index 9ab0f16fbb..69c54f668b 100644
--- a/tests/templates/template_overrides.j2
+++ b/tests/templates/template_overrides.j2
@@ -35,15 +35,6 @@ RUN cd /etc/yum.repos.d/ && mkdir not-for-ci/ \
 {% endraw %}
 
 {% raw %}
-{% block base_centos_repo_overrides_post_rpm %}
-{% endraw %}
-
-RUN sed -i \
-        -e "s|https://trunk.rdoproject.org|{{ nodepool_rdo_proxy }}|g" \
-        /etc/yum.repos.d/delorean*.repo
-
-{% raw %}
-{% endblock %}
 
 {% block base_centos_repo_overrides_post_yum -%}
 {%- endraw -%}
@@ -98,10 +89,7 @@ RUN if [ -d /etc/yum.repos.d/not-for-ci/ ]; then \
         rm ci-{{ base_distro }}.repo && \
         mv not-for-ci/*.repo . && \
         rm -rf not-for-ci; \
-    fi; \
-    sed -i \
-        -e "s|{{ nodepool_rdo_proxy }}|https://trunk.rdoproject.org|g" \
-        /etc/yum.repos.d/delorean*.repo
+    fi;
 {% elif base_distro == "debian" %}
 RUN sed -i -e "s|\[trusted=yes\] http://{{ nodepool_mirror_host }}|http://deb.debian.org|" \
         -e "s|\[trusted=yes\] http://{{ nodepool_mirror_host }}|http://security.debian.org|" \