diff --git a/ci/jenkins/Nightly2.groovy b/ci/jenkins/Nightly2.groovy
index 6c2528268b..ae05f6c6ee 100644
--- a/ci/jenkins/Nightly2.groovy
+++ b/ci/jenkins/Nightly2.groovy
@@ -3,7 +3,7 @@
 def pod = libraryResource 'io/milvus/pod/tekton-4am.yaml'
 
 String cron_timezone = 'TZ=Asia/Shanghai'
-String cron_string = BRANCH_NAME == 'master' ? '50 4 * * * ' : ''
+String cron_string = BRANCH_NAME == '2.6' ? '50 1 * * * ' : ''
 
 // Make timeout 4 hours so that we can run two nightly during the ci
 int total_timeout_minutes = 7 * 60