diff --git a/.zuul.yaml b/.zuul.yaml
index 17c2247df..a89fc2630 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -147,49 +147,31 @@
     name: testbed-deploy-cleura
     parent: testbed-abstract-deploy
     nodeset: testbed-orchestrator-cleura
-    vars:
-      docker_registry: quay.io
-      docker_namespace_kolla: osism
 
 - job:
     name: testbed-deploy-pco
     parent: testbed-abstract-deploy
     nodeset: testbed-orchestrator-pco
-    vars:
-      docker_registry: quay.io
-      docker_namespace_kolla: osism
 
 - job:
     name: testbed-deploy-wavestack
     parent: testbed-abstract-deploy
     nodeset: testbed-orchestrator-wavestack
-    vars:
-      docker_registry: quay.io
-      docker_namespace_kolla: osism
 
 - job:
     name: testbed-upgrade-cleura
     parent: testbed-upgrade
     nodeset: testbed-orchestrator-cleura
-    vars:
-      docker_registry: quay.io
-      docker_namespace_kolla: osism
 
 - job:
     name: testbed-upgrade-pco
     parent: testbed-upgrade
     nodeset: testbed-orchestrator-pco
-    vars:
-      docker_registry: quay.io
-      docker_namespace_kolla: osism
 
 - job:
     name: testbed-upgrade-wavestack
     parent: testbed-upgrade
     nodeset: testbed-orchestrator-wavestack
-    vars:
-      docker_registry: quay.io
-      docker_namespace_kolla: osism
 
 - project:
     merge-mode: squash-merge
diff --git a/ansible/manager-part-1.yml b/ansible/manager-part-1.yml
index 5a3d04ec6..28741d21b 100644
--- a/ansible/manager-part-1.yml
+++ b/ansible/manager-part-1.yml
@@ -5,8 +5,7 @@
 
   vars:
     ansible_ssh_user: dragon
-    docker_namespace_kolla: kolla
-    docker_registry: osism.harbor.regio.digital
+    docker_registry: quay.io
     operator_user: dragon
     repo_path: /home/ubuntu/src/github.com
     version_manager: latest
@@ -71,12 +70,6 @@
         - docker_registry_kolla
         - docker_registry_netbox
 
-    - name: Set kolla container namespace
-      ansible.builtin.command:  # noqa: command-instead-of-module
-        chdir: /opt/configuration
-        cmd: "sed -i 's#docker_namespace: .*#docker_namespace: {{ docker_namespace_kolla }}#g' /opt/configuration/environments/kolla/configuration.yml"
-      changed_when: true
-
     - name: Copy testbed crt
       become: true
       ansible.builtin.copy:
diff --git a/environments/configuration.yml b/environments/configuration.yml
index 1cc89c839..7f23acb8e 100644
--- a/environments/configuration.yml
+++ b/environments/configuration.yml
@@ -18,10 +18,10 @@ docker_opts:
 # container registries
 
 docker_registry: index.docker.io
-docker_registry_ansible: osism.harbor.regio.digital
-docker_registry_kolla: osism.harbor.regio.digital
-docker_registry_netbox: osism.harbor.regio.digital
-ceph_docker_registry: osism.harbor.regio.digital
+docker_registry_ansible: quay.io
+docker_registry_kolla: quay.io
+docker_registry_netbox: quay.io
+ceph_docker_registry: quay.io
 
 ##########################
 # operator
diff --git a/environments/kolla/configuration.yml b/environments/kolla/configuration.yml
index 5fbda2221..97d0f3e2e 100644
--- a/environments/kolla/configuration.yml
+++ b/environments/kolla/configuration.yml
@@ -2,7 +2,7 @@
 ##########################################################
 # docker
 
-docker_namespace: kolla
+docker_namespace: osism
 
 ##########################################################
 # loadbalancer
diff --git a/playbooks/deploy.yml b/playbooks/deploy.yml
index 84c3aa642..c543b2ead 100644
--- a/playbooks/deploy.yml
+++ b/playbooks/deploy.yml
@@ -23,9 +23,6 @@
     version_manager: "{{ manager_version | default('latest') }}"
     version_openstack: "{{ openstack_version | default('2023.1') }}"
 
-    zuul_docker_namespace_kolla: "{{ docker_namespace_kolla | default('kolla') }}"
-    zuul_docker_registry: "{{ docker_registry | default('osism.harbor.regio.digital') }}"
-
     run_bootstrap: true
     run_checks: true
     run_refstack: "{{ refstack | default(false) | bool }}"
@@ -129,7 +126,7 @@
       ansible.builtin.shell:
         chdir: "{{ ansible_path }}"
         cmd: |
-          {{ ansible_playbook }} -i {{ terraform_path }}/inventory.{{ cloud_env }} --key-file {{ terraform_path }}/.id_rsa.{{ cloud_env }} manager-part-1.yml -e cloud_env={{ cloud_env }} -e repo_path={{ repo_path }} -e version_manager={{ version_manager }} -e docker_registry={{ zuul_docker_registry }} -e docker_namespace_kolla={{ zuul_docker_namespace_kolla }}
+          {{ ansible_playbook }} -i {{ terraform_path }}/inventory.{{ cloud_env }} --key-file {{ terraform_path }}/.id_rsa.{{ cloud_env }} manager-part-1.yml -e cloud_env={{ cloud_env }} -e repo_path={{ repo_path }} -e version_manager={{ version_manager }}
       changed_when: true
 
     - name: Deploy manager + bootstrap nodes
diff --git a/playbooks/upgrade-stable.yml b/playbooks/upgrade-stable.yml
index 8c3b3c050..13a0563d7 100644
--- a/playbooks/upgrade-stable.yml
+++ b/playbooks/upgrade-stable.yml
@@ -3,7 +3,6 @@
   ansible.builtin.import_playbook: deploy.yml
   vars:
     version_manager: "{{ manager_version | default('latest') }}"
-    namespace_kolla: "{{ docker_namespace_kolla | default('kolla') }}"
 
     run_bootstrap: false
 
@@ -21,7 +20,6 @@
     version_manager_next: "{{ manager_version_next | default('latest') }}"
     version_ceph_next: "{{ ceph_version_next | default('quincy') }}"
     version_openstack_next: "{{ openstack_version_next | default('2023.1') }}"
-    namespace_kolla_next: "{{ docker_namespace_kolla_next | default('kolla') }}"
 
     run_bootstrap: true
     run_checks: true
@@ -40,7 +38,7 @@
     - name: Run upgrade
       ansible.builtin.command:
         chdir: "{{ terraform_path }}"
-        cmd: make ENVIRONMENT={{ cloud_env }} VERSION_MANAGER={{ version_manager_next }} VERSION_CEPH={{ version_ceph_next }} VERSION_OPENSTACK={{ version_openstack_next }} KOLLA_NAMESPACE={{ namespace_kolla_next }} upgrade
+        cmd: make ENVIRONMENT={{ cloud_env }} VERSION_MANAGER={{ version_manager_next }} VERSION_CEPH={{ version_ceph_next }} VERSION_OPENSTACK={{ version_openstack_next }} upgrade
       changed_when: true
 
     - name: Bootstrap services
diff --git a/playbooks/upgrade.yml b/playbooks/upgrade.yml
index 35341fe75..b28b465c9 100644
--- a/playbooks/upgrade.yml
+++ b/playbooks/upgrade.yml
@@ -5,7 +5,6 @@
     version_ceph: "{{ ceph_version | default('pacific') }}"
     version_manager: "{{ manager_version | default('latest') }}"
     version_openstack: "{{ openstack_version | default('2023.1') }}"
-    namespace_kolla: "{{ docker_namespace_kolla | default('kolla') }}"
 
     run_bootstrap: false
 
@@ -25,7 +24,6 @@
     version_ceph_next: "{{ ceph_version_next | default('quincy') }}"
     version_manager_next: "{{ manager_version_next | default('latest') }}"
     version_openstack_next: "{{ openstack_version_next | default('2023.1') }}"
-    namespace_kolla_next: "{{ docker_namespace_kolla_next | default('kolla') }}"
 
     run_bootstrap: true
 
@@ -45,7 +43,7 @@
     - name: Run upgrade
       ansible.builtin.command:
         chdir: "{{ terraform_path }}"
-        cmd: make ENVIRONMENT={{ cloud_env }} TERRAFORM={{ terraform_binary }} VERSION_MANAGER={{ version_manager_next }} VERSION_CEPH={{ version_ceph_next }} VERSION_OPENSTACK={{ version_openstack_next }} KOLLA_NAMESPACE={{ namespace_kolla_next }} upgrade
+        cmd: make ENVIRONMENT={{ cloud_env }} TERRAFORM={{ terraform_binary }} VERSION_MANAGER={{ version_manager_next }} VERSION_CEPH={{ version_ceph_next }} VERSION_OPENSTACK={{ version_openstack_next }} upgrade
       changed_when: true
       environment:
         TERRAGRUNT_TFPATH: "{{ terragrunt_tfpath }}"
diff --git a/scripts/set-kolla-namespace.sh b/scripts/set-kolla-namespace.sh
index e6fb59ac7..5d8151ce6 100755
--- a/scripts/set-kolla-namespace.sh
+++ b/scripts/set-kolla-namespace.sh
@@ -2,6 +2,6 @@
 set -x
 set -e
 
-NAMESPACE=${1:-kolla}
+NAMESPACE=${1:-osism}
 
 sed -i "s#docker_namespace: .*#docker_namespace: ${NAMESPACE}#g" /opt/configuration/environments/kolla/configuration.yml
diff --git a/scripts/set-manager-version.sh b/scripts/set-manager-version.sh
index 43c1c9066..8c2911586 100755
--- a/scripts/set-manager-version.sh
+++ b/scripts/set-manager-version.sh
@@ -12,7 +12,4 @@ if [[ $VERSION != "latest" ]]; then
     # manager_version parameter) and not by release names.
     sed -i "/ceph_version:/d" /opt/configuration/environments/manager/configuration.yml
     sed -i "/openstack_version:/d" /opt/configuration/environments/manager/configuration.yml
-
-    # In a stable release the images are located in a different namespace
-    sed -i "s#docker_namespace: .*#docker_namespace: kolla/release#g" /opt/configuration/environments/kolla/configuration.yml
 fi
diff --git a/scripts/upgrade.sh b/scripts/upgrade.sh
index 8e83e43ef..301925d85 100755
--- a/scripts/upgrade.sh
+++ b/scripts/upgrade.sh
@@ -9,7 +9,7 @@ echo
 export MANAGER_VERSION=${1:-latest}
 CEPH_VERSION=${2:-quincy}
 OPENSTACK_VERSION=${3:-2023.1}
-KOLLA_NAMESPACE=${4:-kolla}
+KOLLA_NAMESPACE=${4:-osism}
 
 /opt/configuration/scripts/set-manager-version.sh $MANAGER_VERSION
 
diff --git a/terraform/Makefile b/terraform/Makefile
index 0c2107730..6a3585c0e 100644
--- a/terraform/Makefile
+++ b/terraform/Makefile
@@ -17,7 +17,7 @@ VERSION_CEPH ?= quincy
 VERSION_MANAGER ?= latest
 VERSION_OPENSTACK ?= 2023.1
 
-KOLLA_NAMESPACE ?= kolla
+KOLLA_NAMESPACE ?= osism
 
 RALLY ?= false
 REFSTACK ?= false