diff --git a/AUDIT.md b/AUDIT.md
index f1ee4b4..5abdebb 100644
--- a/AUDIT.md
+++ b/AUDIT.md
@@ -321,9 +321,9 @@ weather forecasts. Learners of removed zones keep only the base model.
 offline tests, 26 HA Core tests, compilation, package/translation/changelog checks).
 The offline tests also pass on Python 3.9.6.
 
-## Stabilization after 0.4.0 — 2026-10-27
+## 0.4.1 — stabilization after 0.4.0 — 2026-10-27
 
-Scope: correctness of 0.4.0, no new features, version unchanged. Repository code
+Scope: correctness of 0.4.0, no new features. Repository code
 and tests only (HA Core 2025.12.0 and 2026.2.3 harness); no HAOS, device or
 deployment testing. Still no actuator code; the static and runtime service-call
 guards pass.
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4e4a678..4823f02 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,11 +2,11 @@
 
 Engineering findings and test evidence behind each change are in [AUDIT.md](AUDIT.md).
 
-## Unreleased — stability and correctness
+## 0.4.1 — 2026-10-27
 
-Fixes four correctness problems found in 0.4.0 and separates model accuracy from
-forecast accuracy. No new product features; the version stays 0.4.0 until
-released. Still **observation-only**. Tested in the Home Assistant Core harness
+Stability and correctness: fixes four problems found in 0.4.0 and separates model
+accuracy from forecast accuracy. No new product features. Still
+**observation-only**. Tested in the Home Assistant Core harness
 with HA 2025.12.0 and 2026.2.3; not yet on HAOS.
 
 ### Upgrade notes
diff --git a/README.md b/README.md
index bc568ee..0ff9d64 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# Heating MPC 0.4.0 — custom integration for Home Assistant OS
+# Heating MPC 0.4.1 — custom integration for Home Assistant OS
 
 **Experimental, observation-only (shadow mode).** It **never** changes the Generic Thermostat, the physical relay, the boiler's setpoint, `heat/off`, or Comfort/Away/Sleep. No Docker add-on, MQTT or InfluxDB connection is needed.
 
diff --git a/ROADMAP.md b/ROADMAP.md
index 58b752a..02cdd52 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -93,7 +93,7 @@ configuration changes (now per-component fingerprints with selective
 recalibration, logged in `model_changes`); plans published from inputs that
 changed during optimization or by an overtaken run; and model accuracy reported
 as if it were forecast accuracy. Reload/unload tests now cover repeated reloads
-(one relay listener, one polling coordinator). Not yet released or tested on HAOS.
+(one relay listener, one polling coordinator). Released as 0.4.1; not yet tested on HAOS.
 
 ## Milestone 1 — Explainable forecasts and dashboards (target v0.3.0)
 
diff --git a/custom_components/heating_mpc/manifest.json b/custom_components/heating_mpc/manifest.json
index d686a74..592680d 100644
--- a/custom_components/heating_mpc/manifest.json
+++ b/custom_components/heating_mpc/manifest.json
@@ -9,5 +9,5 @@
   "iot_class": "local_polling",
   "requirements": [],
   "single_config_entry": true,
-  "version": "0.4.0"
+  "version": "0.4.1"
 }