diff --git a/spring-5-security/README.md b/spring-5-security/README.md
index d6573ef8b0..6e9f3ab1e5 100644
--- a/spring-5-security/README.md
+++ b/spring-5-security/README.md
@@ -2,3 +2,5 @@
 
 - [Spring Security 5 -OAuth2 Login](http://www.baeldung.com/spring-security-5-oauth2-login)
 - [Extra Login Fields with Spring Security](https://github.com/eugenp/tutorials/tree/master/spring-5-security)
+- [A Custom Spring SecurityConfigurer](http://www.baeldung.com/spring-security-custom-configurer)
+