diff --git a/doc/xdocs/changes.xml b/doc/xdocs/changes.xml
index ed5172dbe0..94a09a2095 100644
--- a/doc/xdocs/changes.xml
+++ b/doc/xdocs/changes.xml
@@ -45,6 +45,7 @@
HttpSessionContextIntegrationFilter elegantly handles IOExceptions and ServletExceptions within filter chain (see http://opensource.atlassian.com/projects/spring/browse/SEC-20)
Form, CAS, X509 and Remember-Me authentication mechanisms now publish an InteractiveAuthenticationSuccessEvent (see http://opensource.atlassian.com/projects/spring/browse/SEC-5)
FilterSecurityInterceptor now has an observeOncePerRequest boolean property, allowing multiple fragments of the HTTP request to be individually authorized (see http://opensource.atlassian.com/projects/spring/browse/SEC-14)
+ AnonymousProcessingFilter cleans up the Authentication object, avoiding HttpSession creation overhead
HttpSessionContextIntegrationFilter elegantly handles IOExceptions and ServletExceptions within filter chain (see http://opensource.atlassian.com/projects/spring/browse/SEC-20)