From d09205d6faf2b142bd96cc9917b83ed7467b1d21 Mon Sep 17 00:00:00 2001
From: johnA1331 <53036378+johnA1331@users.noreply.github.com>
Date: Thu, 24 Mar 2022 00:07:25 +0800
Subject: [PATCH] Update README.md

---
 persistence-modules/spring-boot-persistence-mongodb/README.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/persistence-modules/spring-boot-persistence-mongodb/README.md b/persistence-modules/spring-boot-persistence-mongodb/README.md
index 97241ad464..f5eaeff89c 100644
--- a/persistence-modules/spring-boot-persistence-mongodb/README.md
+++ b/persistence-modules/spring-boot-persistence-mongodb/README.md
@@ -5,4 +5,5 @@
 - [Upload and Retrieve Files Using MongoDB and Spring Boot](https://www.baeldung.com/spring-boot-mongodb-upload-file)
 - [GridFS in Spring Data MongoDB](http://www.baeldung.com/spring-data-mongodb-gridfs)
 - [ZonedDateTime with Spring Data MongoDB](https://www.baeldung.com/spring-data-mongodb-zoneddatetime)
+- [A Guide to @DBRef in MongoDB](https://www.baeldung.com/spring-mongodb-dbref-annotation)