diff --git a/files/config.js.tpl b/files/config.js.tpl
index fc12edf..1334398 100644
--- a/files/config.js.tpl
+++ b/files/config.js.tpl
@@ -27,7 +27,8 @@ module.exports = {
 
   // Schedule configuration - only run during specified time window
   // This reduces resource usage by limiting when Renovate checks for updates
-  schedule: ['after 2am and before 4am'],
+  // Cron format: minute hour day-of-month month day-of-week
+  schedule: ['* 2-3 * * *'],  // 2:00 AM to 3:59 AM
   timezone: 'Europe/Amsterdam',
 
   // Regex managers for custom version detection