diff --git a/ErrorHandlerTrait.php b/ErrorHandlerTrait.php
index f71ac57..07de383 100644
--- a/ErrorHandlerTrait.php
+++ b/ErrorHandlerTrait.php
@@ -24,6 +24,9 @@ trait ErrorHandlerTrait
      */
     public $payloadDataCallback;
 
+    /**
+     * @return void
+     */
     public function logException($exception)
     {
         $this->logExceptionRollbar($exception);
@@ -51,7 +54,7 @@ private function getPayloadData($exception)
         return $payloadData;
     }
 
-    private function payloadCallback()
+    private function payloadCallback(): array|null
     {
         if (!isset($this->payloadDataCallback)) {
             return null;
@@ -70,6 +73,9 @@ private function payloadCallback()
         return $payloadData;
     }
 
+    /**
+     * @return void
+     */
     protected function logExceptionRollbar($exception)
     {
         foreach (Yii::$app->get($this->rollbarComponentName)->ignoreExceptions as $ignoreRecord) {
diff --git a/composer.json b/composer.json
index 223c461..f102ab2 100644
--- a/composer.json
+++ b/composer.json
@@ -12,13 +12,23 @@
         }
     ],
     "require": {
-        "php": ">=7.1",
-        "yiisoft/yii2": "^2.0.15",
-        "rollbar/rollbar": "^2.1"
+        "php": ">=8.0",
+        "yiisoft/yii2": "^2.0",
+        "rollbar/rollbar": "^3.1"
     },
+    "minimum-stability": "dev",
+    "prefer-stable": true,
     "autoload": {
         "psr-4": {
             "baibaratsky\\yii\\rollbar\\": ""
         }
+    },
+    "config": {
+        "allow-plugins": {
+            "yiisoft/yii2-composer": true
+        }
+    },
+    "require-dev": {
+        "vimeo/psalm": "^5.1"
     }
 }
diff --git a/log/Target.php b/log/Target.php
index 88da865..4c0153c 100644
--- a/log/Target.php
+++ b/log/Target.php
@@ -10,12 +10,18 @@ class Target extends \yii\log\Target
 {
     protected $requestId;
 
+    /**
+     * @return void
+     */
     public function init()
     {
         $this->requestId = uniqid(gethostname(), true);
         parent::init();
     }
 
+    /**
+     * @return void
+     */
     public function export()
     {
         foreach ($this->messages as $message) {
@@ -28,7 +34,7 @@ public function export()
         }
     }
 
-    protected static function getLevelName($level)
+    protected static function getLevelName($level): string
     {
         if (in_array($level,
             [Logger::LEVEL_PROFILE, Logger::LEVEL_PROFILE_BEGIN, Logger::LEVEL_PROFILE_END, Logger::LEVEL_TRACE])) {
diff --git a/psalm.xml b/psalm.xml
new file mode 100644
index 0000000..36b3bc5
--- /dev/null
+++ b/psalm.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0"?>
+<psalm
+    errorLevel="5"
+    resolveFromConfigFile="true"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xmlns="https://getpsalm.org/schema/config"
+    xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
+>
+    <projectFiles>
+        <directory name="console" />
+        <directory name="log" />
+        <directory name="web" />
+        <file name="ErrorHandlerTrait.php" />
+        <file name="Rollbar.php" />
+        <file name="WithPayload.php" />
+        <ignoreFiles>
+            <directory name="vendor" />
+        </ignoreFiles>
+    </projectFiles>
+</psalm>