diff --git a/.github/workflows/analyzers.yaml b/.github/workflows/analyzers.yaml
index c5d9d9a..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']
+                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 +23,5 @@ jobs:
             - name: Install dependencies
               run: composer update --prefer-dist --no-progress --no-suggest ${{ matrix.composer-options }}
             - name: Run the tests
-              run: ./tools/psalm.phar
+              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 76dea74..0000000
--- a/.phive/phars.xml
+++ /dev/null
@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<phive xmlns="https://phar.io/phive">
-  <phar name="psalm" version="^5.16.0" installed="5.26.1" location="./tools/psalm.phar" copy="true"/>
-  <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 214a061..1312ec7 100644
--- a/composer.json
+++ b/composer.json
@@ -20,11 +20,13 @@
         }
     ],
     "require": {
-        "php": "~8.2.0 || ~8.3.0 || ~8.4.0",
+        "php": "~8.3.0 || ~8.4.0 || ~8.5.0",
         "ext-dom": "*",
-        "veewee/xml": "^3.0"
+        "veewee/xml": "^3.4"
     },
     "require-dev": {
-        "phpunit/phpunit": "^10.0 || ^11.0"
+        "phpunit/phpunit": "~12.3",
+        "vimeo/psalm": "~6.13",
+        "php-cs-fixer/shim": "^3.88"
     }
 }
diff --git a/psalm.xml b/psalm.xml
index 4f717ec..fe948bb 100644
--- a/psalm.xml
+++ b/psalm.xml
@@ -9,6 +9,8 @@
     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/XmlnsTest.php b/tests/Unit/XmlnsTest.php
index e25637e..3b51e80 100644
--- a/tests/Unit/XmlnsTest.php
+++ b/tests/Unit/XmlnsTest.php
@@ -3,6 +3,7 @@
 
 namespace SoapTest\Xml\Unit\Xpath;
 
+use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 use Soap\Xml\Xmlns;
 use VeeWee\Xml\Xmlns\Xmlns as XmlXmlns;
@@ -11,8 +12,8 @@ final class XmlnsTest extends TestCase
 {
     /**
      * @param callable(): XmlXmlns
-     * @dataProvider provideKnownXmlnses
      */
+    #[DataProvider('provideKnownXmlnses')]
     public function test_it_knows_some_xmlnses(callable $factory, string $uri): void
     {
         $xmlns = $factory();
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
diff --git a/tools/psalm.phar b/tools/psalm.phar
deleted file mode 100755
index 24b9ae3..0000000
Binary files a/tools/psalm.phar and /dev/null differ