diff --git a/.github/workflows/code-style.yaml b/.github/workflows/code-style.yaml
index a8a0975..867b2ee 100644
--- a/.github/workflows/code-style.yaml
+++ b/.github/workflows/code-style.yaml
@@ -7,7 +7,7 @@ jobs:
         strategy:
             matrix:
                 operating-system: [ubuntu-latest]
-                php-versions: ['8.2', '8.3', '8.4']
+                php-versions: ['8.3', '8.4', '8.5']
                 composer-options: ['--ignore-platform-req=php+']
             fail-fast: false
         name: PHP ${{ matrix.php-versions }} @ ${{ matrix.operating-system }}
@@ -23,4 +23,4 @@ jobs:
             - name: Install dependencies
               run: composer update --prefer-dist --no-progress --no-suggest ${{ matrix.composer-options }}
             - name: Run the tests
-              run: PHP_CS_FIXER_IGNORE_ENV=1 ./tools/php-cs-fixer.phar fix --dry-run
+              run: PHP_CS_FIXER_IGNORE_ENV=1 ./vendor/bin/php-cs-fixer fix --dry-run
diff --git a/.phive/phars.xml b/.phive/phars.xml
deleted file mode 100644
index 4aa93da..0000000
--- a/.phive/phars.xml
+++ /dev/null
@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<phive xmlns="https://phar.io/phive">
-  <phar name="php-cs-fixer" version="^3.13.0" installed="3.64.0" location="./tools/php-cs-fixer.phar" copy="true"/>
-</phive>
diff --git a/composer.json b/composer.json
index 530a4d2..f8aab2a 100644
--- a/composer.json
+++ b/composer.json
@@ -15,12 +15,15 @@
         }
     ],
     "require": {
-        "php": "~8.2.0 || ~8.3.0 || ~8.4.0",
+        "php": "~8.3.0 || ~8.4.0 || ~8.5.0",
         "ext-dom": "*",
-        "phpunit/phpunit": "^10.5.0 || ^11.0",
-        "php-soap/engine": "^2.13",
-        "php-soap/xml": "^1.8",
+        "phpunit/phpunit": "~12.3",
+        "php-soap/engine": "^2.16",
+        "php-soap/xml": "^1.9",
         "php-vcr/php-vcr": "^1.6.0",
         "veewee/xml": "^3.0"
+    },
+    "require-dev": {
+        "php-cs-fixer/shim": "~3.88"
     }
 }
diff --git a/src/AbstractEngineTest.php b/src/AbstractEngineTest.php
index 3124187..d4dcf12 100644
--- a/src/AbstractEngineTest.php
+++ b/src/AbstractEngineTest.php
@@ -4,6 +4,7 @@
 
 namespace Soap\EngineIntegrationTests;
 
+use PHPUnit\Framework\Attributes\RunInSeparateProcess;
 use Soap\Engine\Engine;
 use VCR\VCR;
 
@@ -17,11 +18,7 @@ abstract protected function getVcrPrefix(): string;
      */
     abstract protected function skipVcr(): bool;
 
-    /**
-     *
-     * @runInSeparateProcess
-     * Note: this method will throw Exceptions if VCR can't take over the configured SoapClient.
-     */
+    #[RunInSeparateProcess]
     public function test_it_should_be_possible_to_hook_php_vcr_for_testing()
     {
         $this->runWithCasette('get-city-weather-by-zip-10013.yml', function () {
diff --git a/tools/php-cs-fixer.phar b/tools/php-cs-fixer.phar
deleted file mode 100755
index d071fa5..0000000
Binary files a/tools/php-cs-fixer.phar and /dev/null differ