diff --git a/ci/jenkins/Jenkinsfile b/ci/jenkins/Jenkinsfile
index 24f972748a..40d9686415 100644
--- a/ci/jenkins/Jenkinsfile
+++ b/ci/jenkins/Jenkinsfile
@@ -1,3 +1,5 @@
+#!/usr/bin/env groovy
+
 String cron_timezone = "TZ=Asia/Shanghai"
 String cron_string = BRANCH_NAME == "master" ? "H 0 * * * " : ""
 cron_string =  BRANCH_NAME == "0.5.1" ? "H 1 * * * " : cron_string