diff --git a/docs/modules/ROOT/pages/whats-new.adoc b/docs/modules/ROOT/pages/whats-new.adoc
index 252aa26137..e749d90247 100644
--- a/docs/modules/ROOT/pages/whats-new.adoc
+++ b/docs/modules/ROOT/pages/whats-new.adoc
@@ -5,3 +5,7 @@
 
 * https://github.com/spring-projects/spring-security/pull/18634[gh-18634] - Added javadoc:org.springframework.security.web.util.matcher.InetAddressMatcher[]
 * https://github.com/spring-projects/spring-security/issues/18755[gh-18755] - Include `charset` in `WWW-Authenticate` header
+
+== OAuth 2.0
+
+* https://github.com/spring-projects/spring-security/issues/18745[gh-18745] - Add RestClientOpaqueTokenIntrospector