diff --git a/java-numbers-4/README.md b/java-numbers-4/README.md
index 95d46203ab..267639a829 100644
--- a/java-numbers-4/README.md
+++ b/java-numbers-4/README.md
@@ -6,3 +6,4 @@
 - [Guide to Java BigInteger](https://www.baeldung.com/java-biginteger)
 - [Automorphic Numbers in Java](https://www.baeldung.com/java-automorphic-numbers)
 - [Convert Byte Size Into a Human-Readable Format in Java](https://www.baeldung.com/java-human-readable-byte-size)
+- [Convert boolean to int in Java](https://www.baeldung.com/java-boolean-to-int)