diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8cded22..23e4fe3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,15 @@ ADR-007 and ADR-002.
 
 ## [Unreleased]
 
+## [0.12.0] - 2026-08-20
+
+Printers become a property of the bay rather than of whoever last walked up to a
+PC, and the container stops throwing away the site's own files on every update.
+
+**Air-gapped sites need a fresh offline bundle for this one.** The stack moves to
+MySQL 8.4 LTS, and an existing tarball only carries the 8.0 image, so
+`docker compose up` would ask for an image the site cannot pull.
+
 ### Added
 
 - **Printer assignment has a form.** `PrinterAssignmentPicker` is the ONE picker
diff --git a/docs/PROJECT-MAP.md b/docs/PROJECT-MAP.md
index 0ca5014..461da4b 100644
--- a/docs/PROJECT-MAP.md
+++ b/docs/PROJECT-MAP.md
@@ -11,7 +11,7 @@ never by editing this file.
 
 | series | value | governed by |
 |---|---|---|
-| product `__version__` | `0.11.3` | ADR-007 |
+| product `__version__` | `0.12.0` | ADR-007 |
 | plugin contract `__contract_version__` | `0.20.0` | ADR-002 |
 
 They move independently. A contract bump is not a release.
diff --git a/frontend/package.json b/frontend/package.json
index e3c1956..ef5c7cb 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "shopdb-frontend",
-  "version": "0.11.3",
+  "version": "0.12.0",
   "private": true,
   "type": "module",
   "scripts": {
diff --git a/shopdb/__init__.py b/shopdb/__init__.py
index c1457fc..3e7ee88 100644
--- a/shopdb/__init__.py
+++ b/shopdb/__init__.py
@@ -63,7 +63,7 @@ __contract_version__ = '0.20.0'
 # plugin-contract version above are distinct series with independent
 # bump rules. Not part of the shopdb.api contract surface, so it is
 # not re-exported there.
-__version__ = '0.11.3'
+__version__ = '0.12.0'
 
 
 def create_app(config_name: str = None) -> Flask: