diff --git a/core-java-modules/core-java-collections-maps-4/README.md b/core-java-modules/core-java-collections-maps-4/README.md
index cb25aa5a8a..795f0df702 100644
--- a/core-java-modules/core-java-collections-maps-4/README.md
+++ b/core-java-modules/core-java-collections-maps-4/README.md
@@ -5,3 +5,4 @@ This module contains articles about Map data structures in Java.
 ### Relevant Articles: 
 - [Using a Custom Class as a Key in a Java HashMap](https://www.baeldung.com/java-custom-class-map-key)
 - [Nested HashMaps Examples in Java](https://www.baeldung.com/java-nested-hashmaps)
+- [Java HashMap With Different Value Types](https://www.baeldung.com/java-hashmap-different-value-types)