diff --git a/ip-learning-spark/src/main/scala/cn/ac/iie/service/update/UpdateDocument.scala b/ip-learning-spark/src/main/scala/cn/ac/iie/service/update/UpdateDocument.scala
index 1599e0f..aa16bab 100644
--- a/ip-learning-spark/src/main/scala/cn/ac/iie/service/update/UpdateDocument.scala
+++ b/ip-learning-spark/src/main/scala/cn/ac/iie/service/update/UpdateDocument.scala
@@ -300,6 +300,7 @@ object UpdateDocument {
         fqdnLocIpDoc.setFrom("FQDN/" + fqdn+ "-" + vsysId)
         fqdnLocIpDoc.setTo("IP/" + serverIp+ "-" + vsysId)
         fqdnLocIpDoc.addAttribute("FIRST_FOUND_TIME", firstFoundTime)
+        fqdnLocIpDoc.addAttribute("LAST_FOUND_TIME", lastFoundTime)
         fqdnLocIpDoc.addAttribute("FQDN", fqdn)
         fqdnLocIpDoc.addAttribute("IP", serverIp)
         fqdnLocIpDoc.addAttribute("VSYS_ID", vsysId)