diff --git a/composer.json b/composer.json
index d4d8e28..7040af1 100644
--- a/composer.json
+++ b/composer.json
@@ -22,7 +22,7 @@
         "atk4/schema": "*",
         "codacy/coverage": "dev-master",
         "friendsofphp/php-cs-fixer": "dev-master@dev",
-        "monolog/monolog": "^2.0@dev",
+        "monolog/monolog": "3.0.0",
         "phpmd/phpmd": "2.8.2",
         "phpmetrics/phpmetrics": "dev-master@dev",
         "phpstan/phpstan": "0.12.14",
diff --git a/demos/example-ajax.php b/demos/example-ajax.php
index 611f702..7b794cc 100644
--- a/demos/example-ajax.php
+++ b/demos/example-ajax.php
@@ -3,7 +3,6 @@
 require_once 'bootstrap.php';
 
 use atk4\ui\App;
-use ATK4PHPDebugBar\DebugBar;
 
 class User extends \atk4\data\Model
 {
diff --git a/demos/example-logger.php b/demos/example-logger.php
index 32e5dc9..07a939a 100644
--- a/demos/example-logger.php
+++ b/demos/example-logger.php
@@ -3,7 +3,6 @@
 require_once 'bootstrap.php';
 
 use atk4\ui\App;
-use ATK4PHPDebugBar\DebugBar;
 use Monolog\Handler\StreamHandler;
 use Monolog\Logger;
 
diff --git a/demos/example-persistence.php b/demos/example-persistence.php
index f27e59b..cea6d2f 100644
--- a/demos/example-persistence.php
+++ b/demos/example-persistence.php
@@ -3,7 +3,6 @@
 require_once 'bootstrap.php';
 
 use atk4\ui\App;
-use ATK4PHPDebugBar\DebugBar;
 
 class User extends \atk4\data\Model
 {
diff --git a/src/DebugBar.php b/src/DebugBar.php
index 3f2f56e..a6d4891 100644
--- a/src/DebugBar.php
+++ b/src/DebugBar.php
@@ -119,7 +119,7 @@ public function init(): void
     }
 
     /**
-     * @param DataCollectorInterface $dataCollector
+     * @param  DataCollectorInterface  $dataCollector
      *
      * @throws DebugBarException
      */
@@ -226,10 +226,10 @@ public function getDebugBar(): \DebugBar\DebugBar
     }
 
     /**
-     * @param string $name
+     * @param  string  $name
+     * @return DataCollectorInterface
      *
      * @throws DebugBarException
-     * @return DataCollectorInterface
      */
     public function getCollector(string $name): DataCollectorInterface
     {
@@ -237,8 +237,7 @@ public function getCollector(string $name): DataCollectorInterface
     }
 
     /**
-     * @param string $name
-     *
+     * @param  string  $name
      * @return bool
      */
     public function hasCollector(string $name): bool
@@ -247,8 +246,7 @@ public function hasCollector(string $name): bool
     }
 
     /**
-     * @param string $url
-     *
+     * @param  string  $url
      * @return $this
      */
     public function setAssetsResourcesUrl(string $url)
@@ -259,8 +257,7 @@ public function setAssetsResourcesUrl(string $url)
     }
 
     /**
-     * @param string $path
-     *
+     * @param  string  $path
      * @return $this
      */
     public function setAssetsResourcesPath(string $path)
@@ -294,7 +291,7 @@ public function addATK4LoggerCollector(): void
     }
 
     /**
-     * @param Persistence\SQL|null $persistence
+     * @param  Persistence\SQL|null  $persistence
      *
      * @throws DebugBarException
      */
diff --git a/tests/DebugBarTest.php b/tests/DebugBarTest.php
index ebd60a5..13af12f 100644
--- a/tests/DebugBarTest.php
+++ b/tests/DebugBarTest.php
@@ -42,6 +42,7 @@ public function testGetDebugBar_AppDynamicMethods()
 
     /**
      * Only for increase coverage, cover 1 line of code.
+     *
      * @runInSeparateProcess
      */
     public function testSendMessagesViaHeaders()