diff --git a/CHANGELOG.md b/CHANGELOG.md
index 713b4d8..aa6eecf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,7 +3,7 @@ All notable changes in **salt-lint** are documented below.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [0.9.0] (2023-01-13)
 ### Added
 - Rule 219 for catching missing over-indentation of nested dicts ([#284](https://github.com/warpnet/salt-lint/pull/284)).
 - Add Python 3.11 support ([#290](https://github.com/warpnet/salt-lint/pull/290)).
@@ -50,7 +50,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Rules 901-915 to check for deprecated states and state options ([#214](https://github.com/warpnet/salt-lint/pull/214)).
 - This `CHANGELOG.md` file to be able to list all notable changes for each version of **salt-lint** ([#223](https://github.com/warpnet/salt-lint/pull/223)).
 
-[Unreleased]: https://github.com/warpnet/salt-lint/compare/v0.8.0...HEAD
+[Unreleased]: https://github.com/warpnet/salt-lint/compare/v0.9.0...HEAD
+[0.9.0]: https://github.com/warpnet/salt-lint/compare/v0.8.0...v0.9.0
 [0.8.0]: https://github.com/warpnet/salt-lint/compare/v0.7.0...v0.8.0
 [0.7.0]: https://github.com/warpnet/salt-lint/compare/v0.6.1...v0.7.0
 [0.6.1]: https://github.com/warpnet/salt-lint/compare/v0.6.0...v0.6.1
diff --git a/LICENSE b/LICENSE
index 63c16ad..6d86f1a 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2020,2021 Warpnet B.V.
+Copyright (c) 2020,2023 Warpnet B.V.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/docs/index.md b/docs/index.md
index a0ffc07..e644921 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -170,7 +170,7 @@ To use salt-lint with [pre-commit](https://pre-commit.com), just add the followi
 ---
 repos:
   - repo: https://github.com/warpnet/salt-lint
-    rev: v0.8.0
+    rev: v0.9.0
     hooks:
       - id: salt-lint
 ```
diff --git a/docs/man/salt-lint.1 b/docs/man/salt-lint.1
index b947838..ac1385e 100644
--- a/docs/man/salt-lint.1
+++ b/docs/man/salt-lint.1
@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.48.5.
-.TH SALT-LINT "1" "November 2021" "salt-lint 0.8.0" "User Commands"
+.TH SALT-LINT "1" "January 2023" "salt-lint 0.9.0" "User Commands"
 .SH NAME
 salt-lint - A command-line utility that checks for best practices in SaltStack.
 .SH SYNOPSIS
@@ -77,7 +77,7 @@ Warpnet B.V. <info@warpnet.nl>
 .SH "REPORTING BUGS"
 Report bugs to https://github.com/warpnet/salt-lint/issues.
 .SH COPYRIGHT
-Copyright (c) 2020, 2021 Warpnet B.V.
+Copyright (c) 2020, 2023 Warpnet B.V.
 .br
 Copyright (c) 2013-2018 Will Thames <will@thames.id.au>
 .br
diff --git a/saltlint/__init__.py b/saltlint/__init__.py
index 215296b..f9c0035 100644
--- a/saltlint/__init__.py
+++ b/saltlint/__init__.py
@@ -1,11 +1,11 @@
 # -*- coding: utf-8 -*-
-# Copyright (c) 2020-2021 Warpnet B.V.
+# Copyright (c) 2020-2023 Warpnet B.V.
 
 """A command-line utility that checks for best practices in SaltStack.
 """
 
 NAME = 'salt-lint'
-VERSION = '0.8.0'
+VERSION = '0.9.0'
 DESCRIPTION = __doc__
 
 __author__ = 'Warpnet B.V.'
diff --git a/setup.py b/setup.py
index 4ec131c..355b7a5 100644
--- a/setup.py
+++ b/setup.py
@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 # Copyright (c) 2013-2018 Will Thames <will@thames.id.au>
 # Copyright (c) 2018 Ansible by Red Hat
-# Modified work Copyright (c) 2019-2021 Warpnet B.V.
+# Modified work Copyright (c) 2019-2023 Warpnet B.V.
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to deal