diff --git a/bundles/apt/metadata.py b/bundles/apt/metadata.py
index e19f70e..5e55b0c 100644
--- a/bundles/apt/metadata.py
+++ b/bundles/apt/metadata.py
@@ -16,11 +16,13 @@ defaults = {
 )
 def patchday(metadata):
     day = metadata.get('apt/unattended_upgrades/day', 5)
+    hour = metadata.get('apt/unattended_upgrades/hour', 1)
 
     return {
         'cron': {
-            'upgrade-and-reboot': '{minute} 1 * * {day}    root    /usr/local/sbin/upgrade-and-reboot'.format(
+            'upgrade-and-reboot': '{minute} {hour} * * {day}    root    /usr/local/sbin/upgrade-and-reboot'.format(
                 minute=node.magic_number % 30,
+                hour=hour,
                 day=day,
             ),
         },
diff --git a/bundles/c3voc-addons/metadata.py b/bundles/c3voc-addons/metadata.py
index 8b40c70..a6ccd08 100644
--- a/bundles/c3voc-addons/metadata.py
+++ b/bundles/c3voc-addons/metadata.py
@@ -23,11 +23,13 @@ defaults = {
 )
 def patchday(metadata):
     day = metadata.get('apt/unattended_upgrades/day', 5)
+    hour = metadata.get('apt/unattended_upgrades/hour', 1)
 
     return {
         'cron': {
-            'upgrade-and-reboot': '{minute} 1 * * {day}    root    /usr/local/sbin/upgrade-and-reboot'.format(
+            'upgrade-and-reboot': '{minute} {hour} * * {day}    root    /usr/local/sbin/upgrade-and-reboot'.format(
                 minute=node.magic_number % 30,
+                hour=hour,
                 day=day,
             ),
         },