diff --git a/PropertyAccessor.php b/PropertyAccessor.php
index 774c2e9..3aabc5d 100644
--- a/PropertyAccessor.php
+++ b/PropertyAccessor.php
@@ -79,7 +79,7 @@ class PropertyAccessor implements PropertyAccessorInterface
      * @param int $throw        A bitwise combination of the THROW_* constants
      *                          to specify when exceptions should be thrown
      */
-    public function __construct(int $magicMethods = self::MAGIC_GET | self::MAGIC_SET, int $throw = self::THROW_ON_INVALID_PROPERTY_PATH, CacheItemPoolInterface $cacheItemPool = null, PropertyReadInfoExtractorInterface $readInfoExtractor = null, PropertyWriteInfoExtractorInterface $writeInfoExtractor = null)
+    public function __construct(int $magicMethods = self::MAGIC_GET | self::MAGIC_SET, int $throw = self::THROW_ON_INVALID_PROPERTY_PATH, ?CacheItemPoolInterface $cacheItemPool = null, ?PropertyReadInfoExtractorInterface $readInfoExtractor = null, ?PropertyWriteInfoExtractorInterface $writeInfoExtractor = null)
     {
         $this->magicMethodsFlags = $magicMethods;
         $this->ignoreInvalidIndices = 0 === ($throw & self::THROW_ON_INVALID_INDEX);
@@ -187,7 +187,7 @@ public function setValue(object|array &$objectOrArray, string|PropertyPathInterf
         }
     }
 
-    private static function throwInvalidArgumentException(string $message, array $trace, int $i, string $propertyPath, \Throwable $previous = null): void
+    private static function throwInvalidArgumentException(string $message, array $trace, int $i, string $propertyPath, ?\Throwable $previous = null): void
     {
         if (!isset($trace[$i]['file']) || __FILE__ !== $trace[$i]['file']) {
             return;
@@ -662,7 +662,7 @@ private function getPropertyPath(string|PropertyPath $propertyPath): PropertyPat
      *
      * @throws \LogicException When the Cache Component isn't available
      */
-    public static function createCache(string $namespace, int $defaultLifetime, string $version, LoggerInterface $logger = null): AdapterInterface
+    public static function createCache(string $namespace, int $defaultLifetime, string $version, ?LoggerInterface $logger = null): AdapterInterface
     {
         if (!class_exists(ApcuAdapter::class)) {
             throw new \LogicException(sprintf('The Symfony Cache component must be installed to use "%s()".', __METHOD__));
diff --git a/PropertyAccessorBuilder.php b/PropertyAccessorBuilder.php
index 5593e31..5dc6e4f 100644
--- a/PropertyAccessorBuilder.php
+++ b/PropertyAccessorBuilder.php
@@ -226,7 +226,7 @@ public function isExceptionOnInvalidPropertyPath(): bool
      *
      * @return $this
      */
-    public function setCacheItemPool(CacheItemPoolInterface $cacheItemPool = null): static
+    public function setCacheItemPool(?CacheItemPoolInterface $cacheItemPool = null): static
     {
         if (1 > \func_num_args()) {
             trigger_deprecation('symfony/property-access', '6.2', 'Calling "%s()" without any arguments is deprecated, pass null explicitly instead.', __METHOD__);
diff --git a/PropertyPathBuilder.php b/PropertyPathBuilder.php
index 7a87eec..e2ac3fe 100644
--- a/PropertyPathBuilder.php
+++ b/PropertyPathBuilder.php
@@ -21,7 +21,7 @@ class PropertyPathBuilder
     private array $elements = [];
     private array $isIndex = [];
 
-    public function __construct(PropertyPathInterface|string $path = null)
+    public function __construct(PropertyPathInterface|string|null $path = null)
     {
         if (null !== $path) {
             $this->append($path);
@@ -134,7 +134,7 @@ public function replace(int $offset, int $length, PropertyPathInterface|string $
      *
      * @throws OutOfBoundsException If the offset is invalid
      */
-    public function replaceByIndex(int $offset, string $name = null)
+    public function replaceByIndex(int $offset, ?string $name = null)
     {
         if (!isset($this->elements[$offset])) {
             throw new OutOfBoundsException(sprintf('The offset "%s" is not within the property path.', $offset));
@@ -154,7 +154,7 @@ public function replaceByIndex(int $offset, string $name = null)
      *
      * @throws OutOfBoundsException If the offset is invalid
      */
-    public function replaceByProperty(int $offset, string $name = null)
+    public function replaceByProperty(int $offset, ?string $name = null)
     {
         if (!isset($this->elements[$offset])) {
             throw new OutOfBoundsException(sprintf('The offset "%s" is not within the property path.', $offset));