diff --git a/persistence-modules/spring-boot-persistence-mongodb-2/README.md b/persistence-modules/spring-boot-persistence-mongodb-2/README.md
index 45d3d192f1..f3be63c8b5 100644
--- a/persistence-modules/spring-boot-persistence-mongodb-2/README.md
+++ b/persistence-modules/spring-boot-persistence-mongodb-2/README.md
@@ -3,4 +3,5 @@
 - [Logging MongoDB Queries with Spring Boot](https://www.baeldung.com/spring-boot-mongodb-logging)
 - [Configure MongoDB Collection Name for a Class in Spring Data](https://www.baeldung.com/spring-data-mongodb-collection-name)
 - [MongoDB Composite Key With Spring Data](https://www.baeldung.com/spring-data-mongodb-composite-key)
+- [Unique Field in MongoDB Document in Spring Data](https://www.baeldung.com/spring-data-mongodb-unique)
 - More articles: [[<--prev]](../spring-boot-persistence-mongodb)