diff --git a/libraries-4/README.md b/libraries-4/README.md
index 79611d73f4..96d36f8042 100644
--- a/libraries-4/README.md
+++ b/libraries-4/README.md
@@ -12,4 +12,5 @@ Remember, for advanced libraries like [Jackson](/jackson) and [JUnit](/testing-m
 - [Guide to JDeferred](https://www.baeldung.com/jdeferred)
 - [Introduction to MBassador](https://www.baeldung.com/mbassador)
 - [Using Pairs in Java](https://www.baeldung.com/java-pairs)
+- [Introduction to JFreeChart](https://www.baeldung.com/jfreechart-visualize-data)
 - More articles [[<-- prev]](/libraries-3)