diff --git a/ansible/group_vars/all.yml b/ansible/group_vars/all.yml
index 8ba87ac0cd..88bcd07f96 100644
--- a/ansible/group_vars/all.yml
+++ b/ansible/group_vars/all.yml
@@ -457,7 +457,7 @@ openstack_logging_debug: "False"
 openstack_region_name: "RegionOne"
 
 # Variable defined the pin_release_version, apply for rolling upgrade process
-openstack_previous_release_name: "rocky"
+openstack_previous_release_name: "stein"
 
 # A list of policy file formats that are supported by Oslo.policy
 supported_policy_format_list:
diff --git a/zuul.d/base.yaml b/zuul.d/base.yaml
index ed59ee142e..3748650b9d 100644
--- a/zuul.d/base.yaml
+++ b/zuul.d/base.yaml
@@ -26,7 +26,7 @@
     name: kolla-ansible-upgrade-base
     parent: kolla-ansible-base
     vars:
-      previous_release: rocky
+      previous_release: stein
       scenario: upgrade
 
 - job: