diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..25b303a
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,20 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [0.0.1] — 2026-07-15
+
+### Added
+
+- `clock.disallowDateTimeNow` rule — prevents instantiating `DateTime` or `DateTimeImmutable` with the current time (PSR-20 compliance).
+- `clock.disallowTimeFunctions` rule — prevents calling `time()` or `date()` without an explicit timestamp argument (PSR-20 compliance).
+- Automatic Packagist publishing on GitHub release via `publish.yml` workflow.
+- CI matrix across PHP 8.2, 8.3, 8.4, and 8.5.
+
+[Unreleased]: https://github.com/KnpLabs/phpstan-rules/compare/v0.0.1...HEAD
+[0.0.1]: https://github.com/KnpLabs/phpstan-rules/releases/tag/v0.0.1
diff --git a/composer.json b/composer.json
index 261304b..aaa27e4 100644
--- a/composer.json
+++ b/composer.json
@@ -3,6 +3,18 @@
     "description": "PHPStan rules shared across KnpLabs organization projects",
     "type": "phpstan-extension",
     "license": "MIT",
+    "keywords": ["php", "phpstan", "static-analysis", "rules", "good practice"],
+    "homepage": "https://github.com/KnpLabs/phpstan-rules",
+    "authors": [
+        {
+            "name": "KnpLabs",
+            "homepage": "https://knplabs.com"
+        }
+    ],
+    "support": {
+        "issues": "https://github.com/KnpLabs/phpstan-rules/issues",
+        "source": "https://github.com/KnpLabs/phpstan-rules"
+    },
     "require": {
         "php": "^8.2",
         "phpstan/phpstan": "^2.0"