diff --git a/core-java-9/README.md b/core-java-9/README.md
index 7618805fe6..22cbd5f3ee 100644
--- a/core-java-9/README.md
+++ b/core-java-9/README.md
@@ -28,3 +28,4 @@
 - [Introduction to Java 9 StackWalking API](https://www.baeldung.com/java-9-stackwalking-api)
 - [Java 9 Convenience Factory Methods for Collections](https://www.baeldung.com/java-9-collections-factory-methods)
 - [Java 9 Stream API Improvements](https://www.baeldung.com/java-9-stream-api)
+- [A Guide to Java 9 Modularity](https://www.baeldung.com/java-9-modularity)