diff --git a/CHANGELOG.md b/CHANGELOG.md
index cd7c315..92eb44a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## 1.0.0
+
+Distribution version 1.0.0 of the contract and fixtures from 0.4.0-rc.1. The wire
+protocol stays **v1** and the printing extension stays **2.3.0** with the client-initiated
+realtime transport; no schema or fixture changes. 1.0.0 is a distribution version, not a
+wire change.
+
 ## 0.4.0-rc.1 — unreleased
 
 - Add bounded machine-default media profiles and exact job profile/revision
diff --git a/README.md b/README.md
index f811313..bbec0a2 100644
--- a/README.md
+++ b/README.md
@@ -2,12 +2,12 @@
 
 Shared contract for the [QQQ 4.1+ printing QBit](https://github.com/QRun-IO/qbit-printing) and [Windows AppKit connector](https://github.com/QRun-IO/qqq-print-agent). The coordinated [realtime extension 2.0](docs/REALTIME.md) uses a client-initiated authenticated WebSocket for controls, receipts and job notifications, with separate streamed HTTPS documents and no polling fallback. This contract is authoritative for wire names; language types may use their idiomatic naming.
 
-Current release candidate: [**0.3.0-rc.1**](https://github.com/QRun-IO/qqq-print-protocol/releases/tag/v0.3.0-rc.1). Previous distribution: [**0.2.0-rc.1**](https://github.com/QRun-IO/qqq-print-protocol/releases/tag/v0.2.0-rc.1). Wire protocol: **v1**. This repository supplies specification, JSON Schema and synthetic compatibility fixtures; install the Windows connector and integrate the QBit from their own repositories to print documents.
+Distribution version: **1.0.0**. Earlier release candidates: [0.4.0-rc.1](https://github.com/QRun-IO/qqq-print-protocol/releases/tag/v0.4.0-rc.1) and [0.3.0-rc.1](https://github.com/QRun-IO/qqq-print-protocol/releases/tag/v0.3.0-rc.1). Wire protocol: **v1**. This repository supplies specification, JSON Schema and synthetic compatibility fixtures; install the Windows connector and integrate the QBit from their own repositories to print documents.
 
-The next candidate, **0.4.0-rc.1**, adds the [printer media and operator
+Version **0.4.0-rc.1** added the [printer media and operator
 contract](docs/PRINTER-MEDIA.md) for printing semantic extension **2.3.0** (see the
-[extension version registry](docs/VERSIONS.md); 2.2 is rendering only). It is
-under consumer qualification and is not a published release. Media profiles
+[extension version registry](docs/VERSIONS.md); 2.2 is rendering only), which 1.0.0
+carries unchanged. Media profiles
 represent configured Windows queue defaults with exact revision binding;
 operator access uses normal current-user and tenant authorization without
 granting device management. The installed 0.3.2 client does not support these
diff --git a/docs/SESSION-STATE.md b/docs/SESSION-STATE.md
index 0db4e22..253f23b 100644
--- a/docs/SESSION-STATE.md
+++ b/docs/SESSION-STATE.md
@@ -2,8 +2,8 @@
 
 ## Release-cohort integration (branch `release/printing-cohort-20261101`)
 
-Unreleased cohort: protocol package `0.4.0-rc.1`, wire v1, native printing extension
-2.3.0. This branch integrates the script-quality tooling (locked Ruff/Pyright,
+Cohort: protocol package `1.0.0` (source prepared, not yet published; `0.4.0-rc.1` is the
+latest published), wire v1, native printing extension 2.3.0. This branch integrates the script-quality tooling (locked Ruff/Pyright,
 ESLint/Stylistic, strict `checkJs`, the `uri-js` license guard) with the short-label
 test profiles. Short labels add `LABEL_4X2_*` and `LABEL_4X1_*` (203/300/600 dpi)
 for ZPL and PDF, a `device-test-profile-4x1.request.json` fixture, and explicit
diff --git a/package-lock.json b/package-lock.json
index 221952b..d533324 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@qrun-io/qqq-print-protocol",
-  "version": "0.4.0-rc.1",
+  "version": "1.0.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@qrun-io/qqq-print-protocol",
-      "version": "0.4.0-rc.1",
+      "version": "1.0.0",
       "license": "Apache-2.0",
       "devDependencies": {
         "@eslint/js": "10.0.1",
diff --git a/package.json b/package.json
index 90a2e80..a2ce2fc 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@qrun-io/qqq-print-protocol",
-  "version": "0.4.0-rc.1",
+  "version": "1.0.0",
   "private": true,
   "description": "Versioned wire contract and compatibility fixtures for QQQ cloud printing.",
   "license": "Apache-2.0",