diff --git a/java-numbers-4/README.md b/java-numbers-4/README.md
index 7db25b283c..cdd53692e0 100644
--- a/java-numbers-4/README.md
+++ b/java-numbers-4/README.md
@@ -2,3 +2,4 @@
 
 - [Probability in Java](https://www.baeldung.com/java-probability)
 - [Understanding the & 0xff Value in Java](https://www.baeldung.com/java-and-0xff)
+- [Determine if an Integer’s Square Root Is an Integer in Java](https://www.baeldung.com/java-find-if-square-root-is-integer)