diff --git a/.dev-tools/composer.json b/.dev-tools/composer.json
index b44a5699..3dfc4267 100644
--- a/.dev-tools/composer.json
+++ b/.dev-tools/composer.json
@@ -16,7 +16,7 @@
         "shipmonk/phpstan-rules": "^4.1.4",
         "squizlabs/php_codesniffer": "^3.13.2",
         "tomasvotruba/type-coverage": "^2.0.2",
-        "vimeo/psalm": "^6.12.1"
+        "vimeo/psalm": "^6.13.0"
     },
     "autoload": {
         "psr-4": {
diff --git a/.dev-tools/composer.lock b/.dev-tools/composer.lock
index 2bbc2bb5..f3bb138b 100644
--- a/.dev-tools/composer.lock
+++ b/.dev-tools/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "cc29da6bc114fd14f8df10b0cfcbe6c9",
+    "content-hash": "ab0b2efbd9f8b7f3444da6ac50cd0e93",
     "packages": [
         {
             "name": "amphp/amp",
@@ -2994,16 +2994,16 @@
         },
         {
             "name": "vimeo/psalm",
-            "version": "6.12.1",
+            "version": "6.13.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/vimeo/psalm.git",
-                "reference": "e71404b0465be25cf7f8a631b298c01c5ddd864f"
+                "reference": "70cdf647255a1362b426bb0f522a85817b8c791c"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/vimeo/psalm/zipball/e71404b0465be25cf7f8a631b298c01c5ddd864f",
-                "reference": "e71404b0465be25cf7f8a631b298c01c5ddd864f"
+                "url": "https://api.github.com/repos/vimeo/psalm/zipball/70cdf647255a1362b426bb0f522a85817b8c791c",
+                "reference": "70cdf647255a1362b426bb0f522a85817b8c791c"
             },
             "require": {
                 "amphp/amp": "^3",
diff --git a/.dev-tools/psalm.xml b/.dev-tools/psalm.xml
index 4fc196dd..e92d3fbb 100644
--- a/.dev-tools/psalm.xml
+++ b/.dev-tools/psalm.xml
@@ -15,6 +15,10 @@
         <directory name='../src' />
     </projectFiles>
 
+    <stubs>
+        <file name='./psalm_stub.php' preloadClasses='true' />
+    </stubs>
+
     <issueHandlers>
         <DeprecatedClass errorLevel='suppress' />
         <InaccessibleMethod errorLevel='suppress' />
diff --git a/.dev-tools/psalm_stub.php b/.dev-tools/psalm_stub.php
new file mode 100644
index 00000000..3c21f86a
--- /dev/null
+++ b/.dev-tools/psalm_stub.php
@@ -0,0 +1,22 @@
+<?php declare(strict_types=1);
+
+/*
+ * This file is part of PHP CS Fixer: custom fixers.
+ *
+ * (c) 2018 Kuba Werłos
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace PhpCsFixer\Tokenizer {
+    final class FCT
+    {
+        public const int T_ATTRIBUTE = \T_ATTRIBUTE;
+        public const int T_PRIVATE_SET = \T_PRIVATE_SET;
+        public const int T_PROTECTED_SET = \T_PROTECTED_SET;
+        public const int T_PUBLIC_SET = \T_PUBLIC_SET;
+        public const int T_READONLY = \T_READONLY;
+    }
+    final class OtherClassSoTheNameOfClassAboveIsNotChanged {}
+}
diff --git a/src/Fixer/NoUselessWriteVisibilityFixer.php b/src/Fixer/NoUselessWriteVisibilityFixer.php
index 519ba921..0429aa8a 100644
--- a/src/Fixer/NoUselessWriteVisibilityFixer.php
+++ b/src/Fixer/NoUselessWriteVisibilityFixer.php
@@ -15,6 +15,7 @@
 use PhpCsFixer\FixerDefinition\FixerDefinition;
 use PhpCsFixer\FixerDefinition\FixerDefinitionInterface;
 use PhpCsFixer\Tokenizer\CT;
+use PhpCsFixer\Tokenizer\FCT;
 use PhpCsFixer\Tokenizer\Token;
 use PhpCsFixer\Tokenizer\Tokens;
 
@@ -23,19 +24,11 @@
  */
 final class NoUselessWriteVisibilityFixer extends AbstractFixer
 {
-    /** @var non-empty-array<int, list<int>> */
-    private array $predecessorKindMap;
-
-    public function __construct()
-    {
-        if (\defined('T_PUBLIC_SET')) {
-            $this->predecessorKindMap = [
-                \T_PUBLIC_SET => [\T_PUBLIC, CT::T_CONSTRUCTOR_PROPERTY_PROMOTION_PUBLIC],
-                \T_PROTECTED_SET => [\T_PROTECTED, CT::T_CONSTRUCTOR_PROPERTY_PROMOTION_PROTECTED],
-                \T_PRIVATE_SET => [\T_PRIVATE, CT::T_CONSTRUCTOR_PROPERTY_PROMOTION_PRIVATE],
-            ];
-        }
-    }
+    private const PREDECESSOR_KIND_MAP = [
+        FCT::T_PUBLIC_SET => [\T_PUBLIC, CT::T_CONSTRUCTOR_PROPERTY_PROMOTION_PUBLIC],
+        FCT::T_PROTECTED_SET => [\T_PROTECTED, CT::T_CONSTRUCTOR_PROPERTY_PROMOTION_PROTECTED],
+        FCT::T_PRIVATE_SET => [\T_PRIVATE, CT::T_CONSTRUCTOR_PROPERTY_PROMOTION_PRIVATE],
+    ];
 
     public function getDefinition(): FixerDefinitionInterface
     {
@@ -61,7 +54,7 @@ public function getPriority(): int
 
     public function isCandidate(Tokens $tokens): bool
     {
-        return \defined('T_PUBLIC_SET') && $tokens->isAnyTokenKindsFound(\array_keys($this->predecessorKindMap));
+        return $tokens->isAnyTokenKindsFound([FCT::T_PUBLIC_SET, FCT::T_PROTECTED_SET, FCT::T_PRIVATE_SET]);
     }
 
     public function isRisky(): bool
@@ -71,14 +64,14 @@ public function isRisky(): bool
 
     public function fix(\SplFileInfo $file, Tokens $tokens): void
     {
-        foreach ($tokens->findGivenKind(\array_keys($this->predecessorKindMap)) as $kind => $elements) {
+        foreach ($tokens->findGivenKind([FCT::T_PUBLIC_SET, FCT::T_PROTECTED_SET, FCT::T_PRIVATE_SET]) as $kind => $elements) {
             foreach (\array_keys($elements) as $index) {
-                $this->fixVisibility($tokens, $index, $kind, $kind === \T_PUBLIC_SET);
+                self::fixVisibility($tokens, $index, $kind, $kind === \T_PUBLIC_SET);
             }
         }
     }
 
-    private function fixVisibility(Tokens $tokens, int $index, int $kind, bool $makePublicIfNone): void
+    private static function fixVisibility(Tokens $tokens, int $index, int $kind, bool $makePublicIfNone): void
     {
         $prevIndex = $tokens->getPrevMeaningfulToken($index);
         \assert(\is_int($prevIndex));
@@ -87,7 +80,7 @@ private function fixVisibility(Tokens $tokens, int $index, int $kind, bool $make
             \assert(\is_int($prevIndex));
         }
 
-        if (!$tokens[$prevIndex]->isGivenKind($this->predecessorKindMap[$kind])) {
+        if (!$tokens[$prevIndex]->isGivenKind(self::PREDECESSOR_KIND_MAP[$kind])) {
             if ($makePublicIfNone) {
                 $prevDeciderIndex = $tokens->getPrevTokenOfKind($index, ['(', ';', '{']);
                 \assert(\is_int($prevDeciderIndex));
diff --git a/src/Fixer/PhpdocNoIncorrectVarAnnotationFixer.php b/src/Fixer/PhpdocNoIncorrectVarAnnotationFixer.php
index 2899ca1b..13c92f56 100644
--- a/src/Fixer/PhpdocNoIncorrectVarAnnotationFixer.php
+++ b/src/Fixer/PhpdocNoIncorrectVarAnnotationFixer.php
@@ -17,6 +17,7 @@
 use PhpCsFixer\FixerDefinition\FixerDefinitionInterface;
 use PhpCsFixer\Preg;
 use PhpCsFixer\Tokenizer\CT;
+use PhpCsFixer\Tokenizer\FCT;
 use PhpCsFixer\Tokenizer\Token;
 use PhpCsFixer\Tokenizer\Tokens;
 use PhpCsFixerCustomFixers\TokenRemover;
@@ -96,7 +97,7 @@ private static function getIndexAfterPhpDoc(Tokens $tokens, int $index): ?int
     {
         $nextIndex = $tokens->getNextMeaningfulToken($index);
 
-        while ($nextIndex !== null && \defined('T_ATTRIBUTE') && $tokens[$nextIndex]->isGivenKind(\T_ATTRIBUTE)) {
+        while ($nextIndex !== null && $tokens[$nextIndex]->isGivenKind(FCT::T_ATTRIBUTE)) {
             $nextIndex = $tokens->findBlockEnd(Tokens::BLOCK_TYPE_ATTRIBUTE, $nextIndex);
             $nextIndex = $tokens->getNextMeaningfulToken($nextIndex);
         }
@@ -106,14 +107,7 @@ private static function getIndexAfterPhpDoc(Tokens $tokens, int $index): ?int
 
     private static function removeForClassElement(Tokens $tokens, int $index, int $propertyStartIndex): void
     {
-        $tokenKinds = [\T_NS_SEPARATOR, \T_STATIC, \T_STRING, \T_WHITESPACE, CT::T_ARRAY_TYPEHINT, CT::T_NULLABLE_TYPE, CT::T_TYPE_ALTERNATION];
-
-        if (\defined('T_READONLY')) {
-            $tokenKinds[] = CT::T_TYPE_INTERSECTION;
-            $tokenKinds[] = \T_READONLY;
-        }
-
-        $variableIndex = $tokens->getTokenNotOfKindsSibling($propertyStartIndex, 1, $tokenKinds);
+        $variableIndex = $tokens->getTokenNotOfKindsSibling($propertyStartIndex, 1, [\T_NS_SEPARATOR, \T_STATIC, \T_STRING, \T_WHITESPACE, CT::T_ARRAY_TYPEHINT, CT::T_NULLABLE_TYPE, CT::T_TYPE_ALTERNATION, CT::T_TYPE_INTERSECTION, FCT::T_READONLY]);
         \assert(\is_int($variableIndex));
 
         if (!$tokens[$variableIndex]->isGivenKind(\T_VARIABLE)) {
diff --git a/src/Fixer/ReadonlyPromotedPropertiesFixer.php b/src/Fixer/ReadonlyPromotedPropertiesFixer.php
index 50c322d6..a3a6ca47 100644
--- a/src/Fixer/ReadonlyPromotedPropertiesFixer.php
+++ b/src/Fixer/ReadonlyPromotedPropertiesFixer.php
@@ -16,6 +16,7 @@
 use PhpCsFixer\FixerDefinition\VersionSpecification;
 use PhpCsFixer\FixerDefinition\VersionSpecificCodeSample;
 use PhpCsFixer\Tokenizer\CT;
+use PhpCsFixer\Tokenizer\FCT;
 use PhpCsFixer\Tokenizer\Token;
 use PhpCsFixer\Tokenizer\Tokens;
 use PhpCsFixerCustomFixers\Analyzer\ConstructorAnalyzer;
@@ -43,23 +44,14 @@ final class ReadonlyPromotedPropertiesFixer extends AbstractFixer
         [\T_COALESCE_EQUAL, '??='],
         [\T_CONCAT_EQUAL, '.='],
     ];
-
-    /** @var list<int> */
-    private array $promotedPropertyVisibilityKinds;
-
-    public function __construct()
-    {
-        $this->promotedPropertyVisibilityKinds = [
-            CT::T_CONSTRUCTOR_PROPERTY_PROMOTION_PRIVATE,
-            CT::T_CONSTRUCTOR_PROPERTY_PROMOTION_PROTECTED,
-            CT::T_CONSTRUCTOR_PROPERTY_PROMOTION_PUBLIC,
-        ];
-        if (\defined('T_PUBLIC_SET')) {
-            $this->promotedPropertyVisibilityKinds[] = \T_PUBLIC_SET;
-            $this->promotedPropertyVisibilityKinds[] = \T_PROTECTED_SET;
-            $this->promotedPropertyVisibilityKinds[] = \T_PRIVATE_SET;
-        }
-    }
+    private const PROMOTED_PROPERTY_VISIBILITY_KINDS = [
+        CT::T_CONSTRUCTOR_PROPERTY_PROMOTION_PRIVATE,
+        CT::T_CONSTRUCTOR_PROPERTY_PROMOTION_PROTECTED,
+        CT::T_CONSTRUCTOR_PROPERTY_PROMOTION_PUBLIC,
+        FCT::T_PUBLIC_SET,
+        FCT::T_PROTECTED_SET,
+        FCT::T_PRIVATE_SET,
+    ];
 
     public function getDefinition(): FixerDefinitionInterface
     {
@@ -92,7 +84,7 @@ public function getPriority(): int
 
     public function isCandidate(Tokens $tokens): bool
     {
-        return \defined('T_READONLY') && $tokens->isAnyTokenKindsFound($this->promotedPropertyVisibilityKinds);
+        return $tokens->isAnyTokenKindsFound(self::PROMOTED_PROPERTY_VISIBILITY_KINDS);
     }
 
     public function isRisky(): bool
@@ -126,7 +118,7 @@ public function fix(\SplFileInfo $file, Tokens $tokens): void
             \assert(\is_int($constructorOpenParenthesisIndex));
             $constructorCloseParenthesisIndex = $tokens->findBlockEnd(Tokens::BLOCK_TYPE_PARENTHESIS_BRACE, $constructorOpenParenthesisIndex);
 
-            $this->fixParameters(
+            self::fixParameters(
                 $tokens,
                 $classOpenBraceIndex,
                 $classCloseBraceIndex,
@@ -146,7 +138,7 @@ private static function isClassReadonly(Tokens $tokens, int $index): bool
         return $tokens[$index]->isGivenKind(\T_READONLY);
     }
 
-    private function fixParameters(
+    private static function fixParameters(
         Tokens $tokens,
         int $classOpenBraceIndex,
         int $classCloseBraceIndex,
@@ -158,7 +150,7 @@ private function fixParameters(
                 continue;
             }
 
-            $insertIndex = $this->getInsertIndex($tokens, $index);
+            $insertIndex = self::getInsertIndex($tokens, $index);
             if ($insertIndex === null) {
                 continue;
             }
@@ -177,7 +169,7 @@ private function fixParameters(
         }
     }
 
-    private function getInsertIndex(Tokens $tokens, int $index): ?int
+    private static function getInsertIndex(Tokens $tokens, int $index): ?int
     {
         $insertIndex = null;
 
@@ -189,7 +181,7 @@ private function getInsertIndex(Tokens $tokens, int $index): ?int
             if ($tokens[$index]->isGivenKind(\T_READONLY)) {
                 return null;
             }
-            if ($insertIndex === null && $tokens[$index]->isGivenKind($this->promotedPropertyVisibilityKinds)) {
+            if ($insertIndex === null && $tokens[$index]->isGivenKind(self::PROMOTED_PROPERTY_VISIBILITY_KINDS)) {
                 $insertIndex = $index;
             }
         }
diff --git a/tests/AutoReview/SrcCodeTest.php b/tests/AutoReview/SrcCodeTest.php
index b691050e..a151d29f 100644
--- a/tests/AutoReview/SrcCodeTest.php
+++ b/tests/AutoReview/SrcCodeTest.php
@@ -89,9 +89,9 @@ public function testFixerSupportsAllFilesByDefault(): void
     /**
      * @param class-string $className
      *
-     * @dataProvider provideThereIsNoPregFunctionUsedDirectlyCases
+     * @dataProvider provideThereIsNoDisallowedFunctionUsedDirectlyCases
      */
-    public function testThereIsNoPregFunctionUsedDirectly(string $className): void
+    public function testThereIsNoDisallowedFunctionUsedDirectly(string $className): void
     {
         $reflectionClass = new \ReflectionClass($className);
 
@@ -113,8 +113,8 @@ public function testThereIsNoPregFunctionUsedDirectly(string $className): void
             $stringTokens,
         );
         $strings = \array_unique($strings);
-        $message = \sprintf('Class %s must not use preg_*, it shall use Preg::* instead.', $className);
 
+        $message = \sprintf('Class %s must not use preg_*, it shall use Preg::* instead.', $className);
         self::assertNotContains('preg_filter', $strings, $message);
         self::assertNotContains('preg_grep', $strings, $message);
         self::assertNotContains('preg_match', $strings, $message);
@@ -122,18 +122,18 @@ public function testThereIsNoPregFunctionUsedDirectly(string $className): void
         self::assertNotContains('preg_replace', $strings, $message);
         self::assertNotContains('preg_replace_callback', $strings, $message);
         self::assertNotContains('preg_split', $strings, $message);
+
+        self::assertNotContains('defined', $strings);
     }
 
     /**
      * @return iterable<array{string}>
      */
-    public static function provideThereIsNoPregFunctionUsedDirectlyCases(): iterable
+    public static function provideThereIsNoDisallowedFunctionUsedDirectlyCases(): iterable
     {
         $finder = Finder::create()
             ->files()
             ->in(__DIR__ . '/../../src')
-            ->notName('php-cs-fixer.config.*.php')
-            ->notName('run')
             ->sortByName();
 
         /** @var SplFileInfo $file */