diff --git a/src/PhpCs/FiveLab/PhpCsUtils.php b/src/PhpCs/FiveLab/PhpCsUtils.php
index 91f6b9d..763f1b0 100644
--- a/src/PhpCs/FiveLab/PhpCsUtils.php
+++ b/src/PhpCs/FiveLab/PhpCsUtils.php
@@ -63,7 +63,7 @@ public static function getDiffLines(File $file, int $fromPtr, int $toPtr): int
                 $diffLines++;
             } elseif (\in_array($token['code'], Tokens::COMMENT_TOKENS, true)) {
                 if ($token['code'] === T_DOC_COMMENT_OPEN_TAG) {
-                    $i = $file->findNext([T_DOC_COMMENT_CLOSE_TAG], $i + 1);
+                    $i = (int) $file->findNext([T_DOC_COMMENT_CLOSE_TAG], $i + 1);
                 } elseif ($token['code'] === T_COMMENT) {
                     $tokensOnLine = self::getTokensOnLine($file, $token['line']);
                     $existCodeOnLine = false;
diff --git a/src/PhpCs/FiveLab/Sniffs/Formatting/TypedConstantsSniff.php b/src/PhpCs/FiveLab/Sniffs/Formatting/TypedConstantsSniff.php
index 5f3fad8..caa10c3 100644
--- a/src/PhpCs/FiveLab/Sniffs/Formatting/TypedConstantsSniff.php
+++ b/src/PhpCs/FiveLab/Sniffs/Formatting/TypedConstantsSniff.php
@@ -31,10 +31,6 @@ public function register(): array
 
     public function process(File $phpcsFile, mixed $stackPtr): void
     {
-        if (PHP_VERSION_ID < 80300) {
-            return;
-        }
-
         $tokens = $phpcsFile->getTokens();
 
         if (T_STRING === $tokens[$stackPtr + 2]['code'] && T_STRING === $tokens[$stackPtr + 4]['code']) {
diff --git a/src/PhpCs/FiveLab/Sniffs/Formatting/UnusedImportsSniff.php b/src/PhpCs/FiveLab/Sniffs/Formatting/UnusedImportsSniff.php
index d70c933..620471d 100644
--- a/src/PhpCs/FiveLab/Sniffs/Formatting/UnusedImportsSniff.php
+++ b/src/PhpCs/FiveLab/Sniffs/Formatting/UnusedImportsSniff.php
@@ -50,7 +50,7 @@ public function process(File $phpcsFile, mixed $stackPtr): void
             return;
         }
 
-        $currentStackPtr = $phpcsFile->findNext(T_SEMICOLON, $stackPtr);
+        $currentStackPtr = (int) $phpcsFile->findNext(T_SEMICOLON, $stackPtr);
 
         $import = $tokens[$currentStackPtr - 1]['content'];
 
@@ -59,7 +59,7 @@ public function process(File $phpcsFile, mixed $stackPtr): void
 
         $importStackPtr = $stackPtr;
 
-        while ($currentStackPtr = $phpcsFile->findNext(T_USE, ++$currentStackPtr)) {
+        while ($currentStackPtr = (int) $phpcsFile->findNext(T_USE, ++$currentStackPtr)) {
             if (1 === $tokens[$currentStackPtr]['column'] && 0 === $tokens[$currentStackPtr]['level']) {
                 $importStackPtr = $currentStackPtr;
             }
@@ -82,7 +82,7 @@ public function process(File $phpcsFile, mixed $stackPtr): void
                     return;
                 }
 
-                $pos++;
+                $pos = (int) $pos + 1;
             }
         }
 
diff --git a/src/PhpStan/ForbiddenNodeTypeRule.php b/src/PhpStan/ForbiddenNodeTypeRule.php
index 8bbb074..19836c5 100644
--- a/src/PhpStan/ForbiddenNodeTypeRule.php
+++ b/src/PhpStan/ForbiddenNodeTypeRule.php
@@ -36,7 +36,7 @@ class ForbiddenNodeTypeRule implements Rule
      * @param class-string<Node> $nodeType
      * @param string|null        $message
      */
-    public function __construct(string $nodeType, string $message = null)
+    public function __construct(string $nodeType, ?string $message = null)
     {
         if (!\is_a($nodeType, Node::class, true)) { // @phpstan-ignore phpstanApi.runtimeReflection, function.alreadyNarrowedType
             throw new \InvalidArgumentException(\sprintf(