diff --git a/common/deploy-steps.j2 b/common/deploy-steps.j2
index f3c689d5a5..8767581fb2 100644
--- a/common/deploy-steps.j2
+++ b/common/deploy-steps.j2
@@ -542,7 +542,7 @@ outputs:
                 - include_vars: global_vars.yaml
             - hosts: DEPLOY_TARGET_HOST
               name: Run update
-              serial: 1
+              serial: {{ deploy_serial | default(1) }}
               gather_facts: no
               any_errors_fatal: yes
               vars:
@@ -656,7 +656,7 @@ outputs:
                 - include_vars: global_vars.yaml
             - hosts: DEPLOY_TARGET_HOST
               name: Run pre-upgrade rolling tasks
-              serial: 1
+              serial: {{ deploy_serial | default(1) }}
               gather_facts: no
               any_errors_fatal: yes
               tasks: