diff --git a/configure_jenkins.groovy b/configure_jenkins.groovy
index 1a1bdba..3fab426 100644
--- a/configure_jenkins.groovy
+++ b/configure_jenkins.groovy
@@ -127,7 +127,7 @@ platforms.each { platform ->
 			}
 		}
 		triggers {
-			cron('29 3,7,9 * * *')
+			cron('H 3,7,9 * * *')
 		}
 		steps {
 			shell('/usr/bin/env MIRRORS_DEST=${MIRRORS_DEST} MIRRORS_SRC=${MIRRORS_SRC} PLATFORM=' + platform + ' /bin/sh ./scripts/sync_alt_repo')