diff --git a/java-collections-maps/README.md b/java-collections-maps/README.md
index 0b76ca1959..b4ab270448 100644
--- a/java-collections-maps/README.md
+++ b/java-collections-maps/README.md
@@ -18,3 +18,4 @@
 - [Merging Two Maps with Java 8](https://www.baeldung.com/java-merge-maps)
 - [How to Check If a Key Exists in a Map](https://www.baeldung.com/java-map-key-exists)
 - [Comparing Two HashMaps in Java](https://www.baeldung.com/java-compare-hashmaps)
+- [Immutable Map Implementations in Java](https://www.baeldung.com/java-immutable-maps)