diff --git a/.github/workflows/analyzers.yaml b/.github/workflows/analyzers.yaml
index 8670bcf..a1d3d57 100644
--- a/.github/workflows/analyzers.yaml
+++ b/.github/workflows/analyzers.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 }}
@@ -24,3 +24,4 @@ jobs:
               run: composer update --prefer-dist --no-progress --no-suggest ${{ matrix.composer-options }}
             - name: Run the tests
               run: ./vendor/bin/psalm
+              continue-on-error: ${{ matrix.php-versions == '8.5' }}
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/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index b471eec..6229de6 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.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 }}
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 7db5d74..c3c5eff 100644
--- a/composer.json
+++ b/composer.json
@@ -15,9 +15,9 @@
         }
     ],
     "require": {
-        "php": "~8.2.0 || ~8.3.0 || ~8.4.0",
-        "azjezz/psl": "^3.0",
-        "php-soap/xml": "^1.8.0"
+        "php": "~8.3.0 || ~8.4.0 || ~8.5.0",
+        "azjezz/psl": "^3.0 || ^4.0",
+        "php-soap/xml": "^1.9.0"
     },
     "autoload-dev": {
         "psr-4": {
@@ -25,8 +25,9 @@
         }
     },
     "require-dev": {
-        "phpunit/phpunit": "^10.5",
+        "phpunit/phpunit": "^12.3",
         "php-standard-library/psalm-plugin": "^2.2",
-        "vimeo/psalm": "^5.26"
+        "vimeo/psalm": "^6.13",
+        "php-cs-fixer/shim": "^3.88"
     }
 }
diff --git a/phpunit.xml b/phpunit.xml
index 9b20708..fd3fd9b 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -2,6 +2,9 @@
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="vendor/phpunit/phpunit/phpunit.xsd"
         displayDetailsOnPhpunitDeprecations="true"
+        displayDetailsOnTestsThatTriggerWarnings="true"
+        failOnWarning="true"
+        failOnPhpunitWarning="true"
         bootstrap="./vendor/autoload.php"
         colors="true">
     <testsuites>
diff --git a/psalm.xml b/psalm.xml
index f371756..4752746 100644
--- a/psalm.xml
+++ b/psalm.xml
@@ -8,6 +8,8 @@
     skipChecksOnUnresolvableIncludes="false"
     checkForThrowsDocblock="true"
     checkForThrowsInGlobalScope="true"
+    findUnusedCode="false"
+    ensureOverrideAttribute="false"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xmlns="https://getpsalm.org/schema/config"
     xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
diff --git a/tests/Unit/PartialDriverTest.php b/tests/Unit/PartialDriverTest.php
index e5bedf4..f864faf 100644
--- a/tests/Unit/PartialDriverTest.php
+++ b/tests/Unit/PartialDriverTest.php
@@ -16,7 +16,7 @@ final class PartialDriverTest extends TestCase
 {
     public function test_it_can_encode(): void
     {
-        $encoder = $this->createStub(Encoder::class);
+        $encoder = static::createStub(Encoder::class);
         $encoder->method('encode')->willReturn(
             $request = new SoapRequest('', '', '', SoapRequest::SOAP_1_1)
         );
@@ -35,7 +35,7 @@ public function test_it_will_not_encode(): void
 
     public function test_it_can_decode(): void
     {
-        $decoder = $this->createStub(Decoder::class);
+        $decoder = static::createStub(Decoder::class);
         $decoder->method('decode')->willReturn([]);
         $driver = new PartialDriver(decoder: $decoder);
 
diff --git a/tests/Unit/SimpleDriverTest.php b/tests/Unit/SimpleDriverTest.php
index 6b092cb..ab6bdc4 100644
--- a/tests/Unit/SimpleDriverTest.php
+++ b/tests/Unit/SimpleDriverTest.php
@@ -18,11 +18,11 @@ final class SimpleDriverTest extends TestCase
 
     protected function setUp(): void
     {
-        $encoder = $this->createStub(Encoder::class);
+        $encoder = static::createStub(Encoder::class);
         $encoder->method('encode')->willReturn(
             $this->request = new SoapRequest('', '', '', SoapRequest::SOAP_1_1)
         );
-        $decoder = $this->createStub(Decoder::class);
+        $decoder = static::createStub(Decoder::class);
         $decoder->method('decode')->willReturn([]);
         $metadata = new DummyInMemoryMetadata();
 
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