diff --git a/website/content/release-notes/_index.md b/website/content/release-notes/_index.md
index c00fead857a..79ad5ae9aa0 100644
--- a/website/content/release-notes/_index.md
+++ b/website/content/release-notes/_index.md
@@ -2,6 +2,11 @@
 title: Release Notes
 weight: 8
 ---
+## Version 0.13.5
+
+New Features:
+
+- Added namespace validation for custom resources ([PR 1523](https://github.com/metallb/metallb/pull/1523))
 
 ## Version 0.13.4