diff --git a/composer.json b/composer.json
index cc2615b..1d76fa2 100644
--- a/composer.json
+++ b/composer.json
@@ -21,9 +21,9 @@
     },
     "require-dev": {
         "phpstan/extension-installer": "^1.2",
-        "phpstan/phpstan": "^1.0.0",
-        "phpstan/phpstan-phpunit": "^1.0.0",
-        "phpstan/phpstan-strict-rules": "^1.0.0",
+        "phpstan/phpstan": "^2.0.0",
+        "phpstan/phpstan-phpunit": "^2.0.0",
+        "phpstan/phpstan-strict-rules": "^2.0.0",
         "phpunit/phpunit": "^11.0"
     },
     "config": {
diff --git a/src/Cdn77/Sniffs/NamingConventions/ValidConstantNameSniff.php b/src/Cdn77/Sniffs/NamingConventions/ValidConstantNameSniff.php
index d13a809..5d90512 100644
--- a/src/Cdn77/Sniffs/NamingConventions/ValidConstantNameSniff.php
+++ b/src/Cdn77/Sniffs/NamingConventions/ValidConstantNameSniff.php
@@ -55,6 +55,7 @@ public function register(): array
      */
     public function process(File $phpcsFile, $stackPtr): void
     {
+        /** @var array<int, array{code: int|string, content: string}> $tokens */
         $tokens = $phpcsFile->getTokens();
 
         if ($tokens[$stackPtr]['code'] === T_CONST) {
diff --git a/src/Cdn77/Sniffs/NamingConventions/ValidVariableNameSniff.php b/src/Cdn77/Sniffs/NamingConventions/ValidVariableNameSniff.php
index 6133500..693af85 100644
--- a/src/Cdn77/Sniffs/NamingConventions/ValidVariableNameSniff.php
+++ b/src/Cdn77/Sniffs/NamingConventions/ValidVariableNameSniff.php
@@ -42,6 +42,7 @@ class ValidVariableNameSniff extends AbstractVariableSniff
      */
     protected function processVariable(File $phpcsFile, $stackPtr): void
     {
+        /** @var array<int, array{code: int|string, content: string}> $tokens */
         $tokens = $phpcsFile->getTokens();
         $varName = ltrim($tokens[$stackPtr]['content'], '$');
 
@@ -105,6 +106,7 @@ protected function processVariable(File $phpcsFile, $stackPtr): void
      */
     protected function processMemberVar(File $phpcsFile, $stackPtr): void
     {
+        /** @var array<int, array{code: int|string, content: string}> $tokens */
         $tokens = $phpcsFile->getTokens();
 
         $varName = ltrim($tokens[$stackPtr]['content'], '$');
@@ -137,6 +139,7 @@ protected function processMemberVar(File $phpcsFile, $stackPtr): void
      */
     protected function processVariableInString(File $phpcsFile, $stackPtr): void
     {
+        /** @var array<int, array{code: int|string, content: string}> $tokens */
         $tokens = $phpcsFile->getTokens();
 
         if (
diff --git a/src/Cdn77/Sniffs/Ordering/AlphabeticallyOrderedConstantsSniff.php b/src/Cdn77/Sniffs/Ordering/AlphabeticallyOrderedConstantsSniff.php
index b1f3038..e656623 100644
--- a/src/Cdn77/Sniffs/Ordering/AlphabeticallyOrderedConstantsSniff.php
+++ b/src/Cdn77/Sniffs/Ordering/AlphabeticallyOrderedConstantsSniff.php
@@ -139,6 +139,7 @@ private function fix(File $file, array $namesWithValues): void
     private function findConstantNamesWithValuesByVisibility(File $phpcsFile): array
     {
         $constantNamesWithValues = [];
+        /** @var array<int, array{code: int|string, content: string}> $tokens */
         $tokens = $phpcsFile->getTokens();
 
         foreach ($tokens as $stackPtr => $token) {
@@ -177,6 +178,7 @@ private function findConstantNamesWithValuesByVisibility(File $phpcsFile): array
 
     private function getVisibility(File $phpcsFile, int $constStackPtr): string
     {
+        /** @var array<int, array{code: int|string, content: string}> $tokens */
         $tokens = $phpcsFile->getTokens();
         $visibilityTokenPointer = $phpcsFile->findPrevious(
             types: Tokens::$emptyTokens,
@@ -186,13 +188,14 @@ private function getVisibility(File $phpcsFile, int $constStackPtr): string
         );
 
         return in_array($tokens[$visibilityTokenPointer]['code'], [T_PUBLIC, T_PROTECTED, T_PRIVATE], true)
-            ? (string) $tokens[$visibilityTokenPointer]['content']
+            ? $tokens[$visibilityTokenPointer]['content']
             : 'public';
     }
 
     /** @phpstan-return TypeNameShape|null */
     private function findTypeAndConstantName(File $phpcsFile, int $constStackPtr): array|null
     {
+        /** @var array<int, array{code: int|string, content: string}> $tokens */
         $tokens = $phpcsFile->getTokens();
         $assignmentOperatorTokenPtr = $phpcsFile->findNext(
             types: [T_EQUAL, T_SEMICOLON],
@@ -241,6 +244,7 @@ private function findTypeAndConstantName(File $phpcsFile, int $constStackPtr): a
 
     private function findEqualsPointer(File $phpcsFile, int $constNameStackPtr): int|null
     {
+        /** @var array<int, array{code: int|string, content: string}> $tokens */
         $tokens = $phpcsFile->getTokens();
         $equalsTokenPointer = $phpcsFile->findNext(
             types: Tokens::$emptyTokens,
@@ -259,6 +263,7 @@ private function findEqualsPointer(File $phpcsFile, int $constNameStackPtr): int
     /** @phpstan-return ValueShape|null */
     private function findValue(File $phpcsFile, int $equalsTokenPointer): array|null
     {
+        /** @var array<int, array{code: int|string, content: string}> $tokens */
         $tokens = $phpcsFile->getTokens();
         $startValueTokenPointer = $phpcsFile->findNext(
             types: Tokens::$emptyTokens,
diff --git a/tests/TestCase.php b/tests/TestCase.php
index 073df3c..b101446 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -81,6 +81,7 @@ protected static function checkFile(string $filePath, array $sniffProperties = [
 
     private static function getSniffClassReflection(): ReflectionClass
     {
+        /** @var array<string, ReflectionClass<object>> $reflections */
         static $reflections = [];
 
         $className = static::getSniffClassName();