diff --git a/ansible/group_vars/all.yml b/ansible/group_vars/all.yml
index 86ed82ed0c..0dd717abe7 100644
--- a/ansible/group_vars/all.yml
+++ b/ansible/group_vars/all.yml
@@ -455,7 +455,7 @@ openstack_logging_debug: "False"
 openstack_region_name: "RegionOne"
 
 # Variable defined the pin_release_version, apply for rolling upgrade process
-openstack_previous_release_name: "queens"
+openstack_previous_release_name: "rocky"
 
 # A list of policy file formats that are supported by Oslo.policy
 supported_policy_format_list: