From e8e3ea24645bb2054ea50ba2e22ededd7dc59281 Mon Sep 17 00:00:00 2001
From: abhishekmadan30 <amadan@mozilla.com>
Date: Thu, 5 Feb 2026 15:57:44 -0500
Subject: [PATCH] chore: bump version to 19.0.0

---
 CHANGELOG.md                  | 17 +++++++++++++++++
 docs/reference/migrations.rst | 31 +++++++++++++++++++++++++++++++
 pyproject.toml                |  2 +-
 uv.lock                       |  2 +-
 4 files changed, 50 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index fae09ee21..d931536b5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,22 @@
 # Change Log
 
+## [19.0.0] - 2026-02-06
+
+### Added
+
+- BREAKING CHANGE: Support for msgspec schemas; voluptuous schemas renamed to `LegacySchema`
+
+### Changed
+
+- Updated taskcluster dependency to v92; artifact functions now handle redirects manually
+- Updated workerType in template `.taskcluster.yml`
+- Disabled unnecessary `taskcluster-proxy` for Windows tests
+
+### Fixed
+
+- Race condition in `docker_image` transforms when creating docker-contexts directory
+- Wrong location for `extra` in `.taskcluster.yml` template
+
 ## [18.1.0] - 2026-01-13
 
 ### Added
diff --git a/docs/reference/migrations.rst b/docs/reference/migrations.rst
index 285ea941f..1cb078cef 100644
--- a/docs/reference/migrations.rst
+++ b/docs/reference/migrations.rst
@@ -3,6 +3,37 @@ Migration Guide
 
 This page can help when migrating Taskgraph across major versions.
 
+18.x -> 19.x
+------------
+
+* The ``Schema`` class in ``taskgraph.util.schema`` is now based on msgspec
+  instead of voluptuous. The old voluptuous-based class has been renamed to
+  ``LegacySchema``. Both will continue to be supported.
+
+  If you have custom schemas using ``Schema``, you have two options:
+
+  **Option 1**: Switch to ``LegacySchema`` to keep using voluptuous:
+
+  .. code-block:: python
+
+     from taskgraph.util.schema import LegacySchema
+
+  **Option 2**: Migrate to the new msgspec-based ``Schema``:
+
+  .. code-block:: python
+
+     from taskgraph.util.schema import Schema
+
+     class MySchema(Schema):
+         foo: str
+         bar: int = 10
+
+  The new ``Schema`` class uses kebab-case renaming and forbids
+  unknown fields by default. See the msgspec documentation for more details.
+
+* ``validate_schema`` now supports both voluptuous and msgspec schemas, and
+  ``optionally_keyed_by`` accepts a ``use_msgspec=True`` flag for msgspec output.
+
 17.x -> 18.x
 ------------
 
diff --git a/pyproject.toml b/pyproject.toml
index 31cfa1067..497416b80 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 ### Project
 [project]
 name = "taskcluster-taskgraph"
-version = "18.1.0"
+version = "19.0.0"
 description = "Build taskcluster taskgraphs"
 readme = "README.rst"
 authors = [
diff --git a/uv.lock b/uv.lock
index 2eaee814c..b0af0f228 100644
--- a/uv.lock
+++ b/uv.lock
@@ -2084,7 +2084,7 @@ wheels = [
 
 [[package]]
 name = "taskcluster-taskgraph"
-version = "18.1.0"
+version = "19.0.0"
 source = { editable = "." }
 dependencies = [
     { name = "appdirs" },