diff --git a/hamh-alpha/CHANGELOG.md b/hamh-alpha/CHANGELOG.md
index e7a6656..38a173f 100644
--- a/hamh-alpha/CHANGELOG.md
+++ b/hamh-alpha/CHANGELOG.md
@@ -1,8 +1,8 @@
-# v2.1.0-alpha.519
+# v2.1.0-alpha.520
 
 ## Changes
 
-- fix: reduce dead session timeout to 60s and add per-session stale cleanup (#266) (37e31d9f)
+- fix: use graceful session close to notify controllers per Matter Spec (#266) (794d9256)
 
 ---
 ⚠️ **This is an alpha release** - use at your own risk!
diff --git a/hamh-alpha/config.yaml b/hamh-alpha/config.yaml
index b5bfdbe..61bb766 100644
--- a/hamh-alpha/config.yaml
+++ b/hamh-alpha/config.yaml
@@ -1,4 +1,4 @@
-version: "2.1.0-alpha.519"
+version: "2.1.0-alpha.520"
 image: ghcr.io/riddix/home-assistant-matter-hub-addon
 slug: hamh-alpha
 name: Home-Assistant-Matter-Hub (Alpha)