diff --git a/spring-security-modules/spring-security-sso/README.md b/spring-security-modules/spring-security-sso/README.md
index a9fcd88085..4ff5f57a2d 100644
--- a/spring-security-modules/spring-security-sso/README.md
+++ b/spring-security-modules/spring-security-sso/README.md
@@ -5,3 +5,4 @@ This module contains modules about single-sign-on with Spring Security
 ### Relevant Articles:
 
 - [Spring Security Kerberos Integration](https://www.baeldung.com/spring-security-kerberos-integration)
+- [Simple Single Sign-On with Spring Security OAuth2 (legacy stack)](https://www.baeldung.com/sso-spring-security-oauth2-legacy)