From 614002bebf9b5ef9581a35329238db43f00275e9 Mon Sep 17 00:00:00 2001
From: johnA1331 <53036378+johnA1331@users.noreply.github.com>
Date: Thu, 31 Mar 2022 13:54:28 +0800
Subject: [PATCH] Update README.md

---
 persistence-modules/java-mongodb-2/README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/persistence-modules/java-mongodb-2/README.md b/persistence-modules/java-mongodb-2/README.md
index 1b49e11499..7b08569d9d 100644
--- a/persistence-modules/java-mongodb-2/README.md
+++ b/persistence-modules/java-mongodb-2/README.md
@@ -2,4 +2,4 @@
 
 This module contains articles about MongoDB in Java. 
 
-
+- [Guide to Upsert in MongoDB](https://www.baeldung.com/mongodb-upsert)