diff --git a/core-groovy-collections/README.md b/core-groovy-collections/README.md
index 482e33bce1..73f09f4a03 100644
--- a/core-groovy-collections/README.md
+++ b/core-groovy-collections/README.md
@@ -3,4 +3,5 @@
 ## Relevant articles:
 
 - [Maps in Groovy](http://www.baeldung.com/)
+- [Console I/O in Kotlin](https://www.baeldung.com/kotlin-console-io)