diff --git a/LICENSE b/LICENSE
index cd948e6..1b25029 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 The MIT License
 
-Copyright © 2020 spacetab.io, Inc. https://spacetab.io
+Copyright © 2022 spacetab.io, Inc. https://spacetab.io
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
index e1eb85e..0739d94 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ Since `2.0.0` logger is non-blocking and based on Amp and Monolog.
 I create this library with one target, — I'm sick of always copies 
 and paste same code to any of my microservices with logs. 
 
-This wrapper solves one problem with logs. And it name, — fucking brackets -> [] [] [] [].
+This wrapper solves one problem with logs. And this problem, — fucking brackets -> [] [] [] [].
 
 Example, how this wrapper present the logs:
 
@@ -79,7 +79,7 @@ $log->register();
 $log->getMonolog()->info('Hello world');
 ```
 
-4) Okay. It's cool. But I have write logs to multiple streams. How I do it?
+4) Okay. It's cool. But I have written logs to multiple streams. How I do it?
 
 ```php
 <?php
@@ -105,7 +105,7 @@ Simple? Yes, and without fucking brackets.
 
 The MIT License
 
-Copyright © 2020 spacetab.io, Inc. https://spacetab.io
+Copyright © 2022 spacetab.io, Inc. https://spacetab.io
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/composer.json b/composer.json
index 77e7aa5..1c53ef9 100644
--- a/composer.json
+++ b/composer.json
@@ -10,12 +10,12 @@
     }
   ],
   "require": {
-    "php": ">=7.4",
+    "php": ">=8.1",
     "amphp/log": "^1.1"
   },
   "require-dev": {
-    "symfony/var-dumper": "^4.2 || ^5.0",
-    "phpunit/phpunit": "^9.1",
+    "symfony/var-dumper": "^4 || ^5 || ^6",
+    "phpunit/phpunit": "^9",
     "phpstan/phpstan": "^0.12"
   },
   "autoload": {
diff --git a/phpunit.xml b/phpunit.xml
index fc0007e..ceb5900 100755
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -1,28 +1,17 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit backupGlobals="false"
-         backupStaticAttributes="false"
-         bootstrap="vendor/autoload.php"
-         colors="true"
-         convertErrorsToExceptions="true"
-         convertNoticesToExceptions="true"
-         convertWarningsToExceptions="true"
-         processIsolation="false"
-         stopOnError="false"
-         stopOnFailure="false"
-         verbose="true"
->
-    <testsuites>
-        <testsuite name="Test Suite">
-            <directory suffix="Test.php">./tests</directory>
-        </testsuite>
-    </testsuites>
-    <filter>
-        <whitelist processUncoveredFilesFromWhitelist="true">
-            <directory suffix=".php">./src</directory>
-            <exclude>
-                <directory suffix=".php">./tests</directory>
-                <directory suffix=".php">./vendor</directory>
-            </exclude>
-        </whitelist>
-    </filter>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" backupGlobals="false" backupStaticAttributes="false" bootstrap="vendor/autoload.php" colors="true" convertErrorsToExceptions="true" convertNoticesToExceptions="true" convertWarningsToExceptions="true" processIsolation="false" stopOnError="false" stopOnFailure="false" verbose="true" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd">
+  <coverage processUncoveredFiles="true">
+    <include>
+      <directory suffix=".php">./src</directory>
+    </include>
+    <exclude>
+      <directory suffix=".php">./tests</directory>
+      <directory suffix=".php">./vendor</directory>
+    </exclude>
+  </coverage>
+  <testsuites>
+    <testsuite name="Test Suite">
+      <directory suffix="Test.php">./tests</directory>
+    </testsuite>
+  </testsuites>
 </phpunit>
diff --git a/src/Logger.php b/src/Logger.php
index e8920d4..c7ecbea 100644
--- a/src/Logger.php
+++ b/src/Logger.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace Spacetab\Logger;
 
@@ -11,7 +13,7 @@
 
 final class Logger
 {
-    public const CHANNEL = 'App';
+    public final const CHANNEL = 'App';
 
     /**
      * Pre-defined logger handlers.
@@ -20,19 +22,8 @@ final class Logger
      */
     private array $handlers = [];
 
-    /**
-     * @var string
-     */
-    private string $channel;
-
-    /**
-     * @var Monolog
-     */
     private Monolog $monolog;
 
-    /**
-     * @var string
-     */
     private string $level;
 
     /**
@@ -43,7 +34,6 @@ final class Logger
      */
     public function __construct(string $channel = self::CHANNEL, string $level = LogLevel::INFO)
     {
-        $this->channel = $channel;
         $this->level   = $level;
 
         $this->monolog = new Monolog($channel);
@@ -54,6 +44,7 @@ public function __construct(string $channel = self::CHANNEL, string $level = Log
      *
      * @param string $channel
      * @param string $level
+     *
      * @return Logger
      */
     public static function new(string $channel = self::CHANNEL, string $level = LogLevel::INFO): Logger
@@ -65,13 +56,27 @@ public static function new(string $channel = self::CHANNEL, string $level = LogL
     }
 
     /**
-     * Return registered default logger.
+     * Return registered default logger (forward logs to stdout).
      *
      * @param string $channel
      * @param string $level
-     * @return \Psr\Log\LoggerInterface
+     *
+     * @return LoggerInterface
      */
     public static function default(string $channel = self::CHANNEL, string $level = LogLevel::INFO): LoggerInterface
+    {
+        return self::stdout($channel, $level);
+    }
+
+    /**
+     * Return registered logger which forward logs to stderr.
+     *
+     * @param string $channel
+     * @param string $level
+     *
+     * @return LoggerInterface
+     */
+    public static function stdout(string $channel = self::CHANNEL, string $level = LogLevel::INFO): LoggerInterface
     {
         $log = new Logger($channel, $level);
         $log->addStreamHandler();
@@ -80,10 +85,28 @@ public static function default(string $channel = self::CHANNEL, string $level =
         return $log->getMonolog();
     }
 
+    /**
+     * Return registered logger which forward logs to stderr.
+     *
+     * @param string $channel
+     * @param string $level
+     *
+     * @return LoggerInterface
+     */
+    public static function stderr(string $channel = self::CHANNEL, string $level = LogLevel::INFO): LoggerInterface
+    {
+        $log = new Logger($channel, $level);
+        $log->addStreamHandler(ByteStream\getStderr());
+        $log->register();
+
+        return $log->getMonolog();
+    }
+
     /**
      * Add Monolog handler use callback.
      *
      * @param callable $callback
+     *
      * @return Logger
      */
     public function addHandler(callable $callback): self
@@ -109,22 +132,21 @@ public function register(): void
      * Create Monolog logger without fucking brackets -> [] []  [] []  [] []  [] []  [] []
      * if context and extra is empty.
      */
-    public function addStreamHandler(): void
+    public function addStreamHandler(?ByteStream\OutputStream $outputStream = null): void
     {
-        $this->addHandler(function (string $level) {
+        $outputStream = $outputStream ?: ByteStream\getStdout();
+
+        $this->addHandler(function (string $level) use ($outputStream) {
             $formatter = new ConsoleFormatter();
             $formatter->ignoreEmptyContextAndExtra();
 
-            $handler = new StreamHandler(ByteStream\getStdout(), $level);
+            $handler = new StreamHandler($outputStream, $level);
             $handler->setFormatter($formatter);
 
             return $handler;
         });
     }
 
-    /**
-     * @return Monolog
-     */
     public function getMonolog(): Monolog
     {
         return $this->monolog;
diff --git a/tests/LoggerTest.php b/tests/LoggerTest.php
index 68a38ab..1b0117d 100644
--- a/tests/LoggerTest.php
+++ b/tests/LoggerTest.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace Spacetab\Logger\Tests;
 
@@ -10,14 +12,14 @@
 
 class LoggerTest extends TestCase
 {
-    public function testHowLoggerWorks()
+    public function testHowLoggerWorks(): void
     {
         global $globalMustDieOrNot;
 
         $log = new Logger();
         $log->addStreamHandler();
         $log->addHandler(function (): HandlerInterface {
-            return new class() extends AbstractHandler implements HandlerInterface {
+            return new class() extends AbstractHandler {
                 public function handle(array $record): bool {
                     global $globalMustDieOrNot;
                     $globalMustDieOrNot[] = $record;
@@ -35,7 +37,7 @@ public function handle(array $record): bool {
         }
     }
 
-    public function testHowWorksStaticMethods()
+    public function testHowWorksStaticMethods(): void
     {
         $log = Logger::default();
 
@@ -46,5 +48,10 @@ public function testHowWorksStaticMethods()
 
         $log = Logger::new();
         $this->assertInstanceOf(Logger::class, $log);
+
+        $log = Logger::stderr();
+
+        $this->assertInstanceOf(\Monolog\Logger::class, $log);
+        $this->assertInstanceOf(LoggerInterface::class, $log);
     }
 }