diff --git a/config/environments/standalone_centos_libvirt.yml b/config/environments/standalone_centos_libvirt.yml
index 3eecae293..6fdde553e 100644
--- a/config/environments/standalone_centos_libvirt.yml
+++ b/config/environments/standalone_centos_libvirt.yml
@@ -2,17 +2,19 @@
 # instead of the default pre-built undercloud qcow2
 
 # baseos undercloud settings
-undercloud_image_url: https://images.rdoproject.org/CentOS-8-Stream-x86_64-GenericCloud.qcow2
+undercloud_image_url: https://cloud.centos.org/centos/9-stream/x86_64/images/CentOS-Stream-GenericCloud-9-20220509.0.x86_64.qcow2
 
 # Libvirt environments do not yet support whole-disk images, for example
 # https://bugs.launchpad.net/tripleo/+bug/1950383
 whole_disk_images: false
 
 # this must be named undercloud
+# Update md5sum whenever updating undercloud_image_url
 images:
     - name: undercloud
       url: "{{ undercloud_image_url }}"
       type: qcow2
+      md5sum: "15f11323b812a9a0b7c5fa08c97ff42d  CentOS-Stream-GenericCloud-9-20220509.0.x86_64.qcow2"
 
 inject_images: []
 
@@ -37,7 +39,7 @@ standalone_neutron_bridge_mappings: "datacentre:br-ctlplane"
 standalone_libvirt_type: qemu
 build_container_images: true
 # https://bugs.launchpad.net/tripleo/+bug/1902846
-containers_base_image: "ubi8:8.2"
+containers_base_image: "quay.io/centos/centos:stream9"
 
 # having connectivity with external world.
 tempest_public_net_physical_name: datacentre