diff --git a/spring-boot-modules/spring-boot-properties-3/README.md b/spring-boot-modules/spring-boot-properties-3/README.md
index d89f825c86..df272be7f4 100644
--- a/spring-boot-modules/spring-boot-properties-3/README.md
+++ b/spring-boot-modules/spring-boot-properties-3/README.md
@@ -6,4 +6,4 @@
 ### Relevant Articles:
 
 - [How to Define a Map in YAML for a POJO?](https://www.baeldung.com/yaml-map-pojo)
-
+- [Using application.yml vs application.properties in Spring Boot](https://www.baeldung.com/spring-boot-yaml-vs-properties)