diff --git a/playbooks/zuul_reboot.yaml b/playbooks/zuul_reboot.yaml
index db14461c5c..198cc3fee5 100644
--- a/playbooks/zuul_reboot.yaml
+++ b/playbooks/zuul_reboot.yaml
@@ -18,11 +18,11 @@
       apt:
         update_cache: yes
         upgrade: yes
-        register: apt_action
-        # 20 minute wait for unattended-upgrades to complete
-        delay: 30
-        retries: 40
-        until: apt_action is success or 'Failed to lock apt for exclusive operation' not in apt_action.msg
+      register: apt_action
+      # 20 minute wait for unattended-upgrades to complete
+      delay: 30
+      retries: 40
+      until: apt_action is success or 'Failed to lock apt for exclusive operation' not in apt_action.msg
     - name: Reboot the executor server
       reboot:
     - name: Start the executor
@@ -42,11 +42,11 @@
       apt:
         update_cache: yes
         upgrade: yes
-        register: apt_action
-        # 20 minute wait for unattended-upgrades to complete
-        delay: 30
-        retries: 40
-        until: apt_action is success or 'Failed to lock apt for exclusive operation' not in apt_action.msg
+      register: apt_action
+      # 20 minute wait for unattended-upgrades to complete
+      delay: 30
+      retries: 40
+      until: apt_action is success or 'Failed to lock apt for exclusive operation' not in apt_action.msg
     - name: Reboot the merger server
       reboot:
     - name: Start the merger
@@ -72,11 +72,11 @@
       apt:
         update_cache: yes
         upgrade: yes
-        register: apt_action
-        # 20 minute wait for unattended-upgrades to complete
-        delay: 30
-        retries: 40
-        until: apt_action is success or 'Failed to lock apt for exclusive operation' not in apt_action.msg
+      register: apt_action
+      # 20 minute wait for unattended-upgrades to complete
+      delay: 30
+      retries: 40
+      until: apt_action is success or 'Failed to lock apt for exclusive operation' not in apt_action.msg
     - name: Reboot the scheduler server
       reboot:
     - name: Start the scheduler process