diff --git a/.php-cs-fixer.php b/.php-cs-fixer.php
index e6d6ffc..5d4f7df 100644
--- a/.php-cs-fixer.php
+++ b/.php-cs-fixer.php
@@ -9,8 +9,7 @@
 return (new PhpCsFixer\Config())
     ->setRules([
         '@PSR12' => true,
-        '@PHP80Migration' => true,
-        '@PHP81Migration' => true,
+        '@PHP82Migration' => true,
         '@DoctrineAnnotation' => true,
         'align_multiline_comment' => true,
         'array_indentation' => true,
diff --git a/composer.json b/composer.json
index 6689cd8..36c1c75 100644
--- a/composer.json
+++ b/composer.json
@@ -24,7 +24,7 @@
   },
   "minimum-stability": "beta",
   "require": {
-    "php": ">=8.1,<8.3",
+    "php": ">=8.2,<8.3",
     "ext-json": "*",
     "ext-pcntl": "*",
     "amphp/byte-stream": "^2.0",
@@ -56,7 +56,7 @@
   "config": {
     "sort-packages": true,
     "platform": {
-      "php": "8.1.13"
+      "php": "8.2.9"
     }
   },
   "scripts": {
@@ -72,6 +72,9 @@
     "rector": [
       "rector --dry-run"
     ],
+    "rector:fix": [
+      "rector"
+    ],
     "static-analysis": [
       "@composer validate",
       "@phpstan",
diff --git a/composer.lock b/composer.lock
index 42115ae..ed27dd8 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "e2f5b65d7343baeccc5b312202603a83",
+    "content-hash": "7dd5dfd322a8b430e673fa4f01e22020",
     "packages": [
         {
             "name": "amphp/amp",
@@ -4417,13 +4417,13 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": ">=8.1,<8.3",
+        "php": ">=8.2,<8.3",
         "ext-json": "*",
         "ext-pcntl": "*"
     },
     "platform-dev": [],
     "platform-overrides": {
-        "php": "8.1.13"
+        "php": "8.2.9"
     },
-    "plugin-api-version": "2.6.0"
+    "plugin-api-version": "2.3.0"
 }
diff --git a/phpstan-rector.neon b/phpstan-rector.neon
index cd866d5..fd2a646 100644
--- a/phpstan-rector.neon
+++ b/phpstan-rector.neon
@@ -3,7 +3,7 @@ includes:
   - vendor/php-standard-library/phpstan-extension/extension.neon
 
 parameters:
-  phpVersion: 80100
+  phpVersion: 80200
   tmpDir: tmp/phpstan
   paths:
     - src
diff --git a/phpstan.neon b/phpstan.neon
index 6f46277..4fb352f 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -7,7 +7,7 @@ includes:
 
 parameters:
   level: max
-  phpVersion: 80100
+  phpVersion: 80200
   tmpDir: tmp/phpstan
   paths:
     - src
diff --git a/rector.php b/rector.php
index cdcbdfc..06aa4bd 100644
--- a/rector.php
+++ b/rector.php
@@ -14,7 +14,7 @@
 return static function (RectorConfig $rectorConfig): void {
     $rectorConfig->parallel();
     $rectorConfig->paths([__DIR__.'/src', __DIR__.'/tests']);
-    $rectorConfig->phpVersion(PhpVersion::PHP_81);
+    $rectorConfig->phpVersion(PhpVersion::PHP_82);
     $rectorConfig->phpstanConfig(__DIR__.'/phpstan-rector.neon');
     $rectorConfig->cacheClass(FileCacheStorage::class);
     $rectorConfig->cacheDirectory(__DIR__.'/tmp/rector');
@@ -26,7 +26,7 @@
 
     $rectorConfig->sets([
         SetList::CODE_QUALITY,
-        LevelSetList::UP_TO_PHP_81,
+        LevelSetList::UP_TO_PHP_82,
         PHPUnitSetList::PHPUNIT_91,
     ]);
 };
diff --git a/src/ClassDiscovery/Composer/ClassMapClassDiscoverer.php b/src/ClassDiscovery/Composer/ClassMapClassDiscoverer.php
index 91197c2..28f1695 100644
--- a/src/ClassDiscovery/Composer/ClassMapClassDiscoverer.php
+++ b/src/ClassDiscovery/Composer/ClassMapClassDiscoverer.php
@@ -7,12 +7,12 @@
 use BenChallis\SqlMigrations\ClassDiscovery\ClassDiscoverer;
 use BenChallis\SqlMigrations\ClassDiscovery\PhpNamespace;
 
-final class ClassMapClassDiscoverer implements ClassDiscoverer
+final readonly class ClassMapClassDiscoverer implements ClassDiscoverer
 {
     /**
      * @param array<class-string, non-empty-string> $config
      */
-    public function __construct(private readonly array $config)
+    public function __construct(private array $config)
     {
     }
 
diff --git a/src/ClassDiscovery/DeDuplicatingClassDiscoverer.php b/src/ClassDiscovery/DeDuplicatingClassDiscoverer.php
index 7a55376..9bb89bb 100644
--- a/src/ClassDiscovery/DeDuplicatingClassDiscoverer.php
+++ b/src/ClassDiscovery/DeDuplicatingClassDiscoverer.php
@@ -4,9 +4,9 @@
 
 namespace BenChallis\SqlMigrations\ClassDiscovery;
 
-final class DeDuplicatingClassDiscoverer implements ClassDiscoverer
+final readonly class DeDuplicatingClassDiscoverer implements ClassDiscoverer
 {
-    public function __construct(private readonly ClassDiscoverer $delegate)
+    public function __construct(private ClassDiscoverer $delegate)
     {
     }
 
diff --git a/src/ClassDiscovery/PhpNamespace.php b/src/ClassDiscovery/PhpNamespace.php
index 7cda46a..4b5b5ff 100644
--- a/src/ClassDiscovery/PhpNamespace.php
+++ b/src/ClassDiscovery/PhpNamespace.php
@@ -6,12 +6,12 @@
 
 use Psl\Regex;
 
-final class PhpNamespace
+final readonly class PhpNamespace
 {
     /**
      * @param non-empty-string $namespace
      */
-    private function __construct(private readonly string $namespace)
+    private function __construct(private string $namespace)
     {
         \assert($namespace[\strlen($namespace) - 1] !== '\\');
     }
diff --git a/src/Migration/Discovery/RevisionClassDiscoverer.php b/src/Migration/Discovery/RevisionClassDiscoverer.php
index 45989ad..0e18e1e 100644
--- a/src/Migration/Discovery/RevisionClassDiscoverer.php
+++ b/src/Migration/Discovery/RevisionClassDiscoverer.php
@@ -11,9 +11,9 @@
 /**
  * Discovers {@see Revision} implementing classes from classes that are yielded from another {@see ClassDiscoverer}.
  */
-final class RevisionClassDiscoverer implements ClassDiscoverer
+final readonly class RevisionClassDiscoverer implements ClassDiscoverer
 {
-    public function __construct(private readonly ClassDiscoverer $delegate)
+    public function __construct(private ClassDiscoverer $delegate)
     {
     }
 
diff --git a/src/Migration/Discovery/RevisionDiscoverer.php b/src/Migration/Discovery/RevisionDiscoverer.php
index 08fd83f..1cb4e9e 100644
--- a/src/Migration/Discovery/RevisionDiscoverer.php
+++ b/src/Migration/Discovery/RevisionDiscoverer.php
@@ -12,11 +12,11 @@
  * Discovers {@see Revision}s via a {@see RevisionClassDiscoverer} to discover classes, and a {@see RevisionFactory}
  * to instantiate them.
  */
-final class RevisionDiscoverer
+final readonly class RevisionDiscoverer
 {
     public function __construct(
-        private readonly RevisionClassDiscoverer $classDiscoverer,
-        private readonly RevisionFactory $factory,
+        private RevisionClassDiscoverer $classDiscoverer,
+        private RevisionFactory $factory,
     ) {
     }
 
diff --git a/src/Migration/Metadata/Metadata.php b/src/Migration/Metadata/Metadata.php
index cbb59e5..f3ad4e5 100644
--- a/src/Migration/Metadata/Metadata.php
+++ b/src/Migration/Metadata/Metadata.php
@@ -6,9 +6,9 @@
 
 use BenChallis\SqlMigrations\Migration\Version;
 
-final class Metadata
+final readonly class Metadata
 {
-    private function __construct(public readonly Version $version, public readonly State $state)
+    private function __construct(public Version $version, public State $state)
     {
     }
 
diff --git a/src/Migration/Metadata/MySql/MySqlMetadataStore.php b/src/Migration/Metadata/MySql/MySqlMetadataStore.php
index b1b4025..11b4db6 100644
--- a/src/Migration/Metadata/MySql/MySqlMetadataStore.php
+++ b/src/Migration/Metadata/MySql/MySqlMetadataStore.php
@@ -16,12 +16,12 @@
 use Psl\Collection\MapInterface;
 use Psl\Type;
 
-final class MySqlMetadataStore implements MetadataStore
+final readonly class MySqlMetadataStore implements MetadataStore
 {
     /**
      * @param Executor<MysqlResult, MysqlStatement> $executor
      */
-    public function __construct(private readonly Executor $executor)
+    public function __construct(private Executor $executor)
     {
     }
 
diff --git a/src/Migration/Metadata/MySql/MySqlSchemaManager.php b/src/Migration/Metadata/MySql/MySqlSchemaManager.php
index e4a4200..c121c8f 100644
--- a/src/Migration/Metadata/MySql/MySqlSchemaManager.php
+++ b/src/Migration/Metadata/MySql/MySqlSchemaManager.php
@@ -12,12 +12,12 @@
 /**
  * @implements SchemaManager<MysqlResult, MysqlStatement>
  */
-final class MySqlSchemaManager implements SchemaManager
+final readonly class MySqlSchemaManager implements SchemaManager
 {
     /**
      * @param non-empty-string $databaseName
      */
-    public function __construct(private readonly string $databaseName)
+    public function __construct(private string $databaseName)
     {
     }
 
diff --git a/src/Migration/MetadataUpdatingMigrations.php b/src/Migration/MetadataUpdatingMigrations.php
index 2f4cff1..0114ba2 100644
--- a/src/Migration/MetadataUpdatingMigrations.php
+++ b/src/Migration/MetadataUpdatingMigrations.php
@@ -12,11 +12,11 @@
 /**
  * Decorator that updates a {@see MetadataStore} when state changes are performed.
  */
-final class MetadataUpdatingMigrations implements Migrations
+final readonly class MetadataUpdatingMigrations implements Migrations
 {
     public function __construct(
-        private readonly Migrations $migrations,
-        private readonly MetadataStore $metadata,
+        private Migrations $migrations,
+        private MetadataStore $metadata,
     ) {
     }
 
diff --git a/src/Migration/Migration.php b/src/Migration/Migration.php
index b0f870e..69150f1 100644
--- a/src/Migration/Migration.php
+++ b/src/Migration/Migration.php
@@ -8,9 +8,9 @@
 use BenChallis\SqlMigrations\Migration\Metadata\State;
 use BenChallis\SqlMigrations\Migration\Revision\Revision;
 
-final class Migration
+final readonly class Migration
 {
-    public function __construct(public readonly Revision $revision, public readonly Metadata $metadata)
+    public function __construct(public Revision $revision, public Metadata $metadata)
     {
     }
 
diff --git a/src/Migration/MigrationCollector.php b/src/Migration/MigrationCollector.php
index 31ab385..2709656 100644
--- a/src/Migration/MigrationCollector.php
+++ b/src/Migration/MigrationCollector.php
@@ -10,12 +10,12 @@
 use BenChallis\SqlMigrations\Migration\Metadata\MetadataStore;
 use BenChallis\SqlMigrations\Migration\Metadata\State;
 
-final class MigrationCollector
+final readonly class MigrationCollector
 {
     public function __construct(
-        private readonly MetadataStore $metadata,
-        private readonly RevisionDiscoverer $revisionDiscoverer,
-        private readonly VersionExtractor $versionExtractor,
+        private MetadataStore $metadata,
+        private RevisionDiscoverer $revisionDiscoverer,
+        private VersionExtractor $versionExtractor,
     ) {
     }
 
diff --git a/src/Migration/Migrator.php b/src/Migration/Migrator.php
index e0be082..d397907 100644
--- a/src/Migration/Migrator.php
+++ b/src/Migration/Migrator.php
@@ -10,7 +10,7 @@
 use Amp\Sync\Mutex;
 use BenChallis\SqlMigrations\Migration\Metadata\State;
 
-final class Migrator
+final readonly class Migrator
 {
     /**
      * @template TResult of Result
@@ -18,7 +18,7 @@ final class Migrator
      *
      * @param Executor<TResult, TStatement> $executor
      */
-    public function __construct(private readonly Migrations $migrations, private readonly Executor $executor)
+    public function __construct(private Migrations $migrations, private Executor $executor)
     {
     }
 
diff --git a/src/Migration/Revision/RevisionClassNameGenerator.php b/src/Migration/Revision/RevisionClassNameGenerator.php
index 646db54..1af1802 100644
--- a/src/Migration/Revision/RevisionClassNameGenerator.php
+++ b/src/Migration/Revision/RevisionClassNameGenerator.php
@@ -7,9 +7,9 @@
 use Psl\Regex;
 use Psr\Clock\ClockInterface;
 
-final class RevisionClassNameGenerator
+final readonly class RevisionClassNameGenerator
 {
-    public function __construct(private readonly ClockInterface $clock)
+    public function __construct(private ClockInterface $clock)
     {
     }
 
diff --git a/src/Migration/Revision/RevisionGenerator.php b/src/Migration/Revision/RevisionGenerator.php
index 80c00f2..64f5c8d 100644
--- a/src/Migration/Revision/RevisionGenerator.php
+++ b/src/Migration/Revision/RevisionGenerator.php
@@ -6,9 +6,9 @@
 
 use Amp\File;
 
-final class RevisionGenerator
+final readonly class RevisionGenerator
 {
-    public function __construct(private readonly RevisionClassNameGenerator $classNameGenerator)
+    public function __construct(private RevisionClassNameGenerator $classNameGenerator)
     {
     }
 
diff --git a/src/Migration/Revision/ServiceLocatorRevisionFactory.php b/src/Migration/Revision/ServiceLocatorRevisionFactory.php
index 6eb5b33..02b3093 100644
--- a/src/Migration/Revision/ServiceLocatorRevisionFactory.php
+++ b/src/Migration/Revision/ServiceLocatorRevisionFactory.php
@@ -7,9 +7,9 @@
 use Psr\Container\ContainerExceptionInterface;
 use Psr\Container\ContainerInterface;
 
-final class ServiceLocatorRevisionFactory implements RevisionFactory
+final readonly class ServiceLocatorRevisionFactory implements RevisionFactory
 {
-    public function __construct(private readonly ContainerInterface $revisions)
+    public function __construct(private ContainerInterface $revisions)
     {
     }
 
diff --git a/src/Migration/Version.php b/src/Migration/Version.php
index 01e54bc..d51c325 100644
--- a/src/Migration/Version.php
+++ b/src/Migration/Version.php
@@ -9,12 +9,12 @@
  *
  * The schema versions are treated as being in ascending order, but not sequential.
  */
-final class Version
+final readonly class Version
 {
     /**
      * @param positive-int $value
      */
-    private function __construct(private readonly int $value)
+    private function __construct(private int $value)
     {
     }
 
diff --git a/tests/fixtures/Revision/RevisionWithConstructorHavingParameters.php b/tests/fixtures/Revision/RevisionWithConstructorHavingParameters.php
index caa2d3a..d06e23b 100644
--- a/tests/fixtures/Revision/RevisionWithConstructorHavingParameters.php
+++ b/tests/fixtures/Revision/RevisionWithConstructorHavingParameters.php
@@ -7,9 +7,9 @@
 use Amp\Sql\Executor;
 use BenChallis\SqlMigrations\Migration\Revision\Revision;
 
-final class RevisionWithConstructorHavingParameters implements Revision
+final readonly class RevisionWithConstructorHavingParameters implements Revision
 {
-    public function __construct(private readonly string $foo) // @phpstan-ignore-line
+    public function __construct(private string $foo) // @phpstan-ignore-line
     {
     }
 
diff --git a/tests/helper/MetadataAsserter.php b/tests/helper/MetadataAsserter.php
index d6d76aa..b3f3435 100644
--- a/tests/helper/MetadataAsserter.php
+++ b/tests/helper/MetadataAsserter.php
@@ -9,9 +9,9 @@
 use BenChallis\SqlMigrations\Migration\Version;
 use PHPUnit\Framework\Assert;
 
-final class MetadataAsserter
+final readonly class MetadataAsserter
 {
-    private function __construct(private readonly Metadata $metadata)
+    private function __construct(private Metadata $metadata)
     {
     }
 
diff --git a/tests/helper/MigrationAsserter.php b/tests/helper/MigrationAsserter.php
index 32bd545..8d185ed 100644
--- a/tests/helper/MigrationAsserter.php
+++ b/tests/helper/MigrationAsserter.php
@@ -11,9 +11,9 @@
 use BenChallis\SqlMigrations\Migration\Version;
 use PHPUnit\Framework\Assert;
 
-final class MigrationAsserter
+final readonly class MigrationAsserter
 {
-    private function __construct(private readonly Migration $migration)
+    private function __construct(private Migration $migration)
     {
     }