diff --git a/control-plane/roles/gardener/README.md b/control-plane/roles/gardener/README.md
index 119979d68..8e4368fac 100644
--- a/control-plane/roles/gardener/README.md
+++ b/control-plane/roles/gardener/README.md
@@ -96,10 +96,14 @@ This includes the metal-stack extension provider called [gardener-extension-prov
 | gardener_extension_networking_cilium_enabled                 |           | If enabled, deploys the gardener-networking-extension-cilium                                                                                |
 | gardener_extension_shoot_cert_service_enabled                |           | If enabled, deploys the gardener-extension-shoot-cert-service                                                                               |
 | gardener_extension_shoot_dns_service_enabled                 |           | If enabled, deploys the gardener-extension-shoot-dns-service                                                                                |
+| gardener_extension_backup_s3_enabled                         |           | If enabled, deploys the gardener-extension-backup-s3                                                                                        |
+| gardener_extension_dns_powerdns_enabled                      |           | If enabled, deploys the gardener-extension-dns-powerdns                                                                                     |
 | gardener_os_controller_repo_ref                              |           | A repo reference for deploying the [os-metal-extension](https://github.com/metal-stack/os-metal-extension/)                                 |
 | gardener_networking_cilium_repo_ref                          |           | A repo reference for deploying the [gardener-extension-networking-cilium](https://github.com/gardener/gardener-extension-networking-cilium) |
 | gardener_extension_provider_metal_repo_ref                   |           | A repo reference for deploying the [gardener-extension-provider-metal](https://github.com/metal-stack/gardener-extension-provider-metal)    |
 | gardener_shoot_dns_service_repo_ref                          |           | A repo reference for deploying the [gardener-extension-shoot-dns-service](https://github.com/gardener/gardener-extension-shoot-dns-service) |
+| gardener_extension_backup_s3_repo_ref                        |           | A repo reference for deploying the [gardener-extension-backup-s3](https://github.com/metal-stack/gardener-extension-backup-s3)              |
+| gardener_extension_dns_powerdns_repo_ref                     |           | A repo reference for deploying the [gardener-extension-dns-powerdns](https://github.com/metal-stack/gardener-extension-dns-powerdns)        |
 | gardener_metal_admission_replicas                            |           | Specifies the amount of metal-admission webhook replicas                                                                                    |
 | gardener_metal_admission_vpa                                 |           | Enables the VPA for the metal-admission webhook                                                                                             |
 | gardener_extension_provider_metal_cluster_audit_enabled      |           | Enables the audit functionality of the GEPM                                                                                                 |
@@ -122,6 +126,10 @@ This includes the metal-stack extension provider called [gardener-extension-prov
 | gardener_shoot_dns_service_image_vector_overwrite            |           | Allows overriding the image vector for the shoot-dns-service extension                                                                      |
 | gardener_shoot_dns_service_dns_controller_manager_image_name |           | Setting an explicit image name for the dns-controller-manager                                                                               |
 | gardener_shoot_dns_service_dns_controller_manager_image_tag  |           | Setting an explicit image tag for the dns-controller-manager                                                                                |
+| gardener_extension_backup_s3_image_name                      |           | Setting an explicit image name for the gardener-extension-backup-s3                                                                         |
+| gardener_extension_backup_s3_image_tag                       |           | Setting an explicit image tag for the gardener-extension-backup-s3                                                                          |
+| gardener_extension_dns_powerdns_image_name                   |           | Setting an explicit image name for the gardener-extension-dns-powerdns                                                                      |
+| gardener_extension_dns_powerdns_image_tag                    |           | Setting an explicit image tag for the  gardener-extension-dns-powerdns                                                                      |
 
 ### Certificates
 
diff --git a/defaults/main.yaml b/defaults/main.yaml
index a6d8b7929..613267a90 100644
--- a/defaults/main.yaml
+++ b/defaults/main.yaml
@@ -58,6 +58,10 @@ metal_stack_release:
     gardener_mcm_provider_metal_image_tag: "docker-images.metal-stack.gardener.machine-controller-manager-provider-metal.tag"
     gardener_extension_audit_image_name: "docker-images.metal-stack.gardener.gardener-extension-audit.name"
     gardener_extension_audit_image_tag: "docker-images.metal-stack.gardener.gardener-extension-audit.tag"
+    gardener_extension_backup_s3_image_tag: "docker-images.metal-stack.gardener.gardener-extension-backup-s3.tag"
+    gardener_extension_backup_s3_image_name: "docker-images.metal-stack.gardener.gardener-extension-backup-s3.name"
+    gardener_extension_dns_powerdns_image_tag: "docker-images.metal-stack.gardener.gardener-extension-dns-powerdns.tag"
+    gardener_extension_dns_powerdns_image_name: "docker-images.metal-stack.gardener.gardener-extension-dns-powerdns.name"
     # kubernetes
     csi_lvm_controller_image_tag: "docker-images.metal-stack.kubernetes.csi-lvm-controller.tag"
     csi_lvm_controller_image_name: "docker-images.metal-stack.kubernetes.csi-lvm-controller.name"