diff --git a/CHANGELOG.md b/CHANGELOG.md
index e0fffcf..c9613c2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,14 @@ All notable changes to **adn-server** are documented here.
 
 <!-- version list -->
 
+## v2.5.6 (2026-09-19)
+
+### Bug Fixes
+
+- Write alias downloads atomically and validate checksum before persisting
+  ([`aad30ba`](https://github.com/Amateur-Digital-Network/ADN-DMR-Peer-Server/commit/aad30baebab0bf5195b9a5313fa5c7a6e82f23e6))
+
+
 ## v2.5.5 (2026-09-18)
 
 ### Bug Fixes
diff --git a/README.md b/README.md
index e0ca1e9..9e087cb 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # ADN DMR Peer Server
 
-**Version 2.5.5** — pairs with **adn-monitor 2.0.0-rc.4** (report v2 slim wire + JSON HELLO).
+**Version 2.5.6** — pairs with **adn-monitor 2.0.0-rc.4** (report v2 slim wire + JSON HELLO).
 
 ADN DMR conference bridge server. Configuration is YAML; the codebase follows clean architecture (domain, application, infrastructure). v2 adds integrated **PROXY**, **SubscriptionStore** routing, report v2 to the monitor, and a unified **`adn-server.py`** entrypoint (`--echo`, `--doctor`, `--no-proxy`). See [CHANGELOG.md](CHANGELOG.md).
 
diff --git a/pyproject.toml b/pyproject.toml
index 48318fb..7f3577c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,7 +8,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "adn-server"
-version = "2.5.5"
+version = "2.5.6"
 description = "ADN DMR Peer Server"
 readme = "README.md"
 license = { text = "GPL-3.0-or-later" }