diff --git a/core-java-modules/core-java-security-4/README.md b/core-java-modules/core-java-security-4/README.md
index 3c910e50be..8f5ee308bd 100644
--- a/core-java-modules/core-java-security-4/README.md
+++ b/core-java-modules/core-java-security-4/README.md
@@ -6,4 +6,5 @@ This module contains articles about core Java Security
 - [Check if Certificate Is Self-Signed or CA-Signed With Java](https://www.baeldung.com/java-check-certificate-sign)
 - [Extract CN From X509 Certificate in Java](https://www.baeldung.com/java-extract-common-name-x509-certificate)
 - [Check Certificate Name and Alias in Keystore File](https://www.baeldung.com/java-keystore-check-certificate-name-alias)
+- [Using a Custom TrustStore in Java](https://www.baeldung.com/java-custom-truststore)
 - More articles: [[<-- prev]](/core-java-modules/core-java-security-3)