diff --git a/core-groovy/README.md b/core-groovy/README.md
index fde7f33f86..6e385d528f 100644
--- a/core-groovy/README.md
+++ b/core-groovy/README.md
@@ -6,3 +6,4 @@
 - [Working with JSON in Groovy](http://www.baeldung.com/groovy-json)
 - [Reading a File in Groovy](https://www.baeldung.com/groovy-file-read)
 - [Types of Strings in Groovy](https://www.baeldung.com/groovy-strings)
+- [A Quick Guide to Iterating a Map in Groovy](https://www.baeldung.com/groovy-map-iterating)