diff --git a/core-java-modules/core-java-io/README.md b/core-java-modules/core-java-io/README.md
index 9ce39459dd..6737ad6eb9 100644
--- a/core-java-modules/core-java-io/README.md
+++ b/core-java-modules/core-java-io/README.md
@@ -40,3 +40,4 @@
 - [How to Write to a CSV File in Java](https://www.baeldung.com/java-csv)
 - [List Files in a Directory in Java](https://www.baeldung.com/java-list-directory-files)
 - [Java InputStream to Byte Array and ByteBuffer](https://www.baeldung.com/convert-input-stream-to-array-of-bytes)
+- [Introduction to the Java NIO Selector](https://www.baeldung.com/java-nio-selector)