diff --git a/main.tf b/main.tf
index ddb78551368ea3413d30e8081a616062a3bb7c5e..0e7641fb1796fd70f0911f17651a8c02989aab31 100644
--- a/main.tf
+++ b/main.tf
@@ -75,12 +75,10 @@ resource "google_container_cluster" "cluster" {
     ]
   }
 
-  # Stop Google from upgrading cluster nodes during the work week
+  # Stop Google from upgrading cluster nodes during work hours.
   maintenance_policy {
-    recurring_window {
-      recurrence = "FREQ=WEEKLY;BYDAY=MO,TU,WE,TH,FR,SA,SU"
-      end_time   = "2020-01-28T08:00:00Z"
-      start_time = "2020-01-28T04:00:00Z"
+    daily_maintenance_window {
+      start_time = "02:00"
     }
   }
 }