diff --git a/.github/workflows/phpunit.yml b/.github/workflows/phpunit.yml
index 06c9759..caa6ffb 100644
--- a/.github/workflows/phpunit.yml
+++ b/.github/workflows/phpunit.yml
@@ -4,13 +4,52 @@ on:
   push:
 
 jobs:
-  test:
+  test_php_82_and_newer:
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
         php_version:
+          - "8.3"
           - "8.2"
+    steps:
+      - uses: actions/checkout@v3
+      - uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php_version }}
+        env:
+          COMPOSER_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - name: Get composer cache directory
+        id: composer-cache
+        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+      - name: Cache composer dependencies
+        uses: actions/cache@v2
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+          restore-keys: ${{ runner.os }}-composer-
+      - name: Update PHPUnit
+        run: composer require phpunit/phpunit --dev -W
+      - name: Install dependencies
+        run: composer update
+      - name: Validate dependencies
+        run: composer validate
+      - name: install Rector
+        run: composer require rector/rector --dev -W
+      - name: run Rector
+        run: cd tests && ../vendor/bin/phpunit --migrate-configuration
+        shell: bash
+      - name: run Rector
+        run: cd tests && ../vendor/bin/rector process .
+        shell: bash
+      - name: Run tests
+        run: vendor/bin/phpunit --configuration tests/phpunit.xml
+  test_php_81_and_lower:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        php_version:
           - "8.1"
           - "8.0"
           - "7.4"
diff --git a/.gitignore b/.gitignore
index a3b69ef..439b338 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,14 @@
 *.bak
+.env
+.envrc
 /.idea
+/.vscode
+/composer-setup.php
 /composer.lock
 /coverage_clover.xml
+/docker-compose.yml
+/examples/people.csv
 /phive.xml
+/tests/.phpunit.result.cache
 /tools
 /vendor/
diff --git a/tests/methods/DataRowCountTest.php b/tests/methods/DataRowCountTest.php
index aa7c89f..8359263 100644
--- a/tests/methods/DataRowCountTest.php
+++ b/tests/methods/DataRowCountTest.php
@@ -21,7 +21,7 @@ class DataRowCountTest extends TestCase {
         $this->csv = new Csv();
     }
 
-    public function countRowsProvider() {
+    public static function countRowsProvider() {
         return [
             'auto-double-enclosure' => [
                 'auto-double-enclosure.csv',
diff --git a/tests/methods/ParseTest.php b/tests/methods/ParseTest.php
index cf00fc8..eae4bec 100644
--- a/tests/methods/ParseTest.php
+++ b/tests/methods/ParseTest.php
@@ -63,7 +63,7 @@ class ParseTest extends TestCase {
     /**
      * @return array
      */
-    public function autoDetectionProvider() {
+    public static function autoDetectionProvider() {
         return [
             'UTF8_no_BOM' => [__DIR__ . '/../example_files/UTF-8_sep_row_but_no_BOM.csv'],
             'UTF8' => [__DIR__ . '/../example_files/UTF-8_with_BOM_and_sep_row.csv'],
@@ -294,7 +294,7 @@ class ParseTest extends TestCase {
     /**
      * @return array
      */
-    public function autoQuotesDataProvider(): array {
+    public static function autoQuotesDataProvider(): array {
         return array(
             array('auto-double-enclosure.csv', '"'),
             array('auto-single-enclosure.csv', "'"),
diff --git a/tests/properties/OffsetTest.php b/tests/properties/OffsetTest.php
index a633792..7657222 100644
--- a/tests/properties/OffsetTest.php
+++ b/tests/properties/OffsetTest.php
@@ -25,7 +25,7 @@ class OffsetTest extends BaseClass {
         $this->assertEquals($expected, $actual);
     }
 
-    public function numberRangeZeroToFourProvider() {
+    public static function numberRangeZeroToFourProvider() {
         return array_map(function ($number) {
             return [$number];
         }, range(0, 4));
diff --git a/tests/properties/SortByTest.php b/tests/properties/SortByTest.php
index efdab03..7e1a2fe 100644
--- a/tests/properties/SortByTest.php
+++ b/tests/properties/SortByTest.php
@@ -7,7 +7,7 @@ class SortByTest extends BaseClass {
     public function testSortByRating() {
         $this->csv->sort_by = 'rating';
         $this->csv->conditions = 'title does not contain Blood';
-        if (!preg_match('/^8\.2\./', phpversion()))
+        if (!preg_match('/^8\.2\./', phpversion()) && !preg_match('/^8\.3\./', phpversion()))
             $this->_compareWithExpected([
                 // Rating 0
                 'The Killing Kind',
diff --git a/tests/rector.php b/tests/rector.php
new file mode 100644
index 0000000..5878741
--- /dev/null
+++ b/tests/rector.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+use Rector\Config\RectorConfig;
+use Rector\PHPUnit\CodeQuality\Rector\Class_\AddCoversClassAttributeRector;
+use Rector\PHPUnit\AnnotationsToAttributes\Rector\ClassMethod\DataProviderAnnotationToAttributeRector;
+use Rector\PHPUnit\PHPUnit60\Rector\ClassMethod\AddDoesNotPerformAssertionToNonAssertingTestRector;
+use Rector\PHPUnit\AnnotationsToAttributes\Rector\ClassMethod\DependsAnnotationWithValueToAttributeRector;
+use \Rector\Php80\Rector\Class_\AnnotationToAttributeRector;
+
+return static function(RectorConfig $rectorConfig): void {
+    $rectorConfig->rule(AddCoversClassAttributeRector::class);
+    $rectorConfig->rule(DataProviderAnnotationToAttributeRector::class);
+    $rectorConfig->rule(AddDoesNotPerformAssertionToNonAssertingTestRector::class);
+    $rectorConfig->rule(DependsAnnotationWithValueToAttributeRector::class);
+};