diff --git a/kotlin-libraries/README.md b/kotlin-libraries/README.md
index 00b87a8715..466b8e92d3 100644
--- a/kotlin-libraries/README.md
+++ b/kotlin-libraries/README.md
@@ -11,3 +11,4 @@
 - [Kotlin with Ktor](https://www.baeldung.com/kotlin-ktor)
 - [REST API With Kotlin and Kovert](https://www.baeldung.com/kotlin-kovert)
 - [MockK: A Mocking Library for Kotlin](https://www.baeldung.com/kotlin-mockk)
+- [Kotlin Immutable Collections](https://www.baeldung.com/kotlin-immutable-collections)