diff --git a/CHANGELOG.md b/CHANGELOG.md
index d5ee494..f10ff78 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,9 @@
 # Changelog
 
-## 0.3.0 / 1.0.0 - WIP
+## 0.3.0 -2024-08-06
 
-- Support for PHP 8.2, PHP 8.1 and PHP 8.0
+- Support for PHP 8.3, PHP 8.2, PHP 8.1 and PHP 8.0
+- Upgrade Libraries and dependencies
 
 ## 0.2.0 - 2021-07-01
 ### Add
@@ -13,7 +14,7 @@ Special characters are: !"#$%&'()*+,-./:;<=>?@[\]^_`{|}~
 
 ## 0.1.9 - 2021-06-29
 ### Add
-- Add Randomize::chars() for creating string (it is a kind of shortcut for Sequence class);
+- Add Randomize::chars() for creating a string (it is a kind of shortcut for Sequence class);
 
 
 ## 0.1.8 - 2021-03-27
diff --git a/composer.json b/composer.json
index dd74815..fb0cf0c 100644
--- a/composer.json
+++ b/composer.json
@@ -20,11 +20,12 @@
         }
     ],
     "require": {
-        "php": "^8.0|^8.1|^8.2"
+        "php": "^8.0|^8.1|^8.2|^8.3"
     },
     "require-dev": {
         "phpstan/phpstan": "^1.9",
         "phpunit/phpunit": "^8.0|^9.3",
+        "rector/rector": "^1",
         "squizlabs/php_codesniffer": "^3.7"
     },
     "autoload": {
@@ -49,7 +50,6 @@
         "format": "vendor/bin/phpcs --standard=PSR12 src",
         "formatfix": "vendor/bin/phpcbf --standard=PSR12 src",
         "phpstan": "vendor/bin/phpstan"
-
     },
     "config": {
         "sort-packages": true
diff --git a/rector.php b/rector.php
new file mode 100644
index 0000000..6f90f87
--- /dev/null
+++ b/rector.php
@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+use Rector\Config\RectorConfig;
+
+return RectorConfig::configure()
+    ->withPaths([
+        __DIR__.'/examples',
+        __DIR__.'/src',
+        __DIR__.'/tests',
+    ])
+    // uncomment to reach your current PHP version
+    ->withPhpSets(
+        php80: true,
+    )
+    ->withPreparedSets(
+        //deadCode: true,
+        //codeQuality: true,
+        //earlyReturn: true,
+        //typeDeclarations: true,
+        //privatization: true,
+        // naming: true
+    );
diff --git a/src/Models/Char.php b/src/Models/Char.php
index a084989..5000a49 100644
--- a/src/Models/Char.php
+++ b/src/Models/Char.php
@@ -288,6 +288,7 @@ public function cleanAsciiCodes(array $array): void
 
     /**
      * @return $this
+     * @phpstan-ignore method.unused
      */
     private function transformLower(): self
     {
@@ -300,6 +301,7 @@ private function transformLower(): self
     }
     /**
      * @return $this
+     * @phpstan-ignore method.unused
      */
     private function transformUpper(): self
     {
@@ -330,7 +332,7 @@ public function generate(): string
             $this->addPreset($this->presetAlphaLower);
         }
         foreach ($this->transformersStack as $transformerCode) {
-            call_user_func(array($this , $this->transformers[$transformerCode]));
+            call_user_func([$this, $this->transformers[$transformerCode]]);
         }
 
         $rand_index = random_int(0, sizeof($this->ascii_codes) - 1);
diff --git a/src/Models/DateTime.php b/src/Models/DateTime.php
index 1fcf9d8..94f6229 100644
--- a/src/Models/DateTime.php
+++ b/src/Models/DateTime.php
@@ -106,6 +106,6 @@ public function range(string $min, string $max)
      */
     public function generate()
     {
-        return gmdate($this->format, rand($this->min, $this->max));
+        return gmdate($this->format, random_int($this->min, $this->max));
     }
 }
diff --git a/src/Models/Integer.php b/src/Models/Integer.php
index f00fd7c..41fe730 100644
--- a/src/Models/Integer.php
+++ b/src/Models/Integer.php
@@ -7,24 +7,13 @@ class Integer
     public const DEFAULT_MIN = 0;
     public const DEFAULT_MAX = 100;
 
-    /**
-     * @var int
-     */
-    private $min;
-    /**
-     * @var int
-     */
-    private $max;
-
     /**
      * Integer constructor.
      * @param int $min
      * @param int $max
      */
-    public function __construct(int $min = self::DEFAULT_MIN, int $max = self::DEFAULT_MAX)
+    public function __construct(private int $min = self::DEFAULT_MIN, private int $max = self::DEFAULT_MAX)
     {
-        $this->min = $min;
-        $this->max = $max;
     }
 
 
diff --git a/src/Models/LatLong.php b/src/Models/LatLong.php
index 50f5dba..115b3af 100644
--- a/src/Models/LatLong.php
+++ b/src/Models/LatLong.php
@@ -67,7 +67,7 @@ public function generate()
         $result = [];
         switch ($this->format) {
             case "array":
-                $result = array($latitude, $longitude);
+                $result = [$latitude, $longitude];
                 break;
             case "object":
                 $result = new \stdClass();
diff --git a/src/Models/Sample.php b/src/Models/Sample.php
index cf4b8ff..5dd7ef1 100644
--- a/src/Models/Sample.php
+++ b/src/Models/Sample.php
@@ -11,10 +11,6 @@
  */
 class Sample
 {
-    /**
-     * @var array|mixed
-     */
-    private $array;
     /**
      * @var int
      */
@@ -38,9 +34,8 @@ class Sample
      *
      * @param int[]|string[]|\stdClass[] $array
      */
-    public function __construct($array = [])
+    public function __construct(private $array = [])
     {
-        $this->array = $array;
     }
 
     /**
@@ -120,7 +115,7 @@ public function extractKeys()
                     if (is_array($a)) {
                         shuffle($a);
                     }
-                } catch (\Exception | \Error $e) {
+                } catch (\Exception | \Error) {
                     return null;
                 }
 
@@ -187,6 +182,8 @@ public function extract()
             }
         }
         if ($this->implode) {
+            // @TODO implode only for scalar type items
+            /** @phpstan-ignore-next-line */
             return implode(";", $results);
         } else {
             return $results;
diff --git a/src/Randomize.php b/src/Randomize.php
index 6388ee1..811a63d 100644
--- a/src/Randomize.php
+++ b/src/Randomize.php
@@ -69,11 +69,10 @@ public static function chars($count = 10)
      * Return the model registered in $models property
      *
      * @param  string $name
-     * @param  mixed $arguments
      * @return mixed
      * @throws ModelNotFoundException
      */
-    public static function __callStatic(string $name, $arguments)
+    public static function __callStatic(string $name, mixed $arguments)
     {
         if (in_array($name, array_keys(self::$models))) {
             /*