diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index a4783c8..ed27975 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -7,19 +7,22 @@ jobs:
 
     strategy:
       matrix:
-        php: ["8.1", "8.2"]
+        php: ["8.1", "8.2", "8.3", "8.4"]
         composer_flags:
           - '--prefer-lowest'
           - ''
 
     runs-on: ubuntu-latest
-    container:
-      image: eventjet/checks-${{ matrix.php }}:latest
 
     steps:
       - name: Checkout
         uses: actions/checkout@v3
 
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+
       - name: Prepare environment
         run: |
           echo "COMPOSER_CACHE=$(composer config cache-dir)" >> $GITHUB_ENV
diff --git a/tests/RulesTest.php b/tests/RulesTest.php
index 43b7f0e..cde760c 100644
--- a/tests/RulesTest.php
+++ b/tests/RulesTest.php
@@ -35,7 +35,7 @@ final class RulesTest extends TestCase
     private static function phpCsFixerCommand(string $file): string
     {
         return sprintf(
-            '%s/../vendor/bin/php-cs-fixer fix --dry-run --config %s/php-cs-fixer-config.php %s',
+            'PHP_CS_FIXER_IGNORE_ENV=1 %s/../vendor/bin/php-cs-fixer fix --dry-run --config %s/php-cs-fixer-config.php %s',
             __DIR__,
             __DIR__,
             $file