diff --git a/nodes/voc/pretalx.py b/nodes/voc/pretalx.py
index 5495c24..9af6ec4 100644
--- a/nodes/voc/pretalx.py
+++ b/nodes/voc/pretalx.py
@@ -13,6 +13,14 @@ nodes['voc.pretalx'] = {
         'sshmon',
     },
     'metadata': {
+        'apt': {
+            # Move patchday to somewhere where the possibility of
+            # clashing with actual events is less likely.
+            'unattended_upgrades': {
+                'day': 1,
+                'hour': 21,
+            },
+        },
         'interfaces': {
             'default': {
                 'ips': {