diff --git a/src/Bootstrap.php b/src/Bootstrap.php
index b7d8192..b5e1fb6 100644
--- a/src/Bootstrap.php
+++ b/src/Bootstrap.php
@@ -8,13 +8,13 @@
 
 namespace phpviet\yii\validation;
 
+use yii\i18n\I18N;
+use yii\validators\Validator;
+use yii\base\BootstrapInterface;
 use phpviet\yii\validation\validators\IdVNValidator;
 use phpviet\yii\validation\validators\IpVNValidator;
-use phpviet\yii\validation\validators\LandLineVNValidator;
 use phpviet\yii\validation\validators\MobileVNValidator;
-use yii\base\BootstrapInterface;
-use yii\i18n\I18N;
-use yii\validators\Validator;
+use phpviet\yii\validation\validators\LandLineVNValidator;
 
 /**
  * @author Vuong Minh <vuongxuongminh@gmail.com>
diff --git a/src/validators/IdVNValidator.php b/src/validators/IdVNValidator.php
index bdca1d4..0c1a39c 100644
--- a/src/validators/IdVNValidator.php
+++ b/src/validators/IdVNValidator.php
@@ -8,9 +8,9 @@
 
 namespace phpviet\yii\validation\validators;
 
-use PHPViet\Validation\Rules\IdVN as PatternProvider;
 use Yii;
 use yii\validators\RegularExpressionValidator;
+use PHPViet\Validation\Rules\IdVN as PatternProvider;
 
 /**
  * @author Vuong Minh <vuongxuongminh@gmail.com>
diff --git a/src/validators/IpVNValidator.php b/src/validators/IpVNValidator.php
index 1fb4655..0141d24 100644
--- a/src/validators/IpVNValidator.php
+++ b/src/validators/IpVNValidator.php
@@ -8,11 +8,11 @@
 
 namespace phpviet\yii\validation\validators;
 
-use PHPViet\Validation\Rules\IpVN as ConcreteIpVN;
-use PHPViet\Validation\Validator as ConcreteValidator;
 use Yii;
-use yii\validators\IpValidator;
 use yii\validators\Validator;
+use yii\validators\IpValidator;
+use PHPViet\Validation\Rules\IpVN as ConcreteIpVN;
+use PHPViet\Validation\Validator as ConcreteValidator;
 
 /**
  * @author Vuong Minh <vuongxuongminh@gmail.com>
@@ -99,7 +99,6 @@ protected function getDefaultMessage(): string
      *
      * @return IpValidator
      * @throws \yii\base\InvalidConfigException
-     *
      */
     protected function getClientIpValidator(): IpValidator
     {
diff --git a/src/validators/LandLineVNValidator.php b/src/validators/LandLineVNValidator.php
index b38e52e..800bdd3 100644
--- a/src/validators/LandLineVNValidator.php
+++ b/src/validators/LandLineVNValidator.php
@@ -8,9 +8,9 @@
 
 namespace phpviet\yii\validation\validators;
 
-use PHPViet\Validation\Rules\LandLineVN as PatternProvider;
 use Yii;
 use yii\validators\RegularExpressionValidator;
+use PHPViet\Validation\Rules\LandLineVN as PatternProvider;
 
 /**
  * @author Vuong Minh <vuongxuongminh@gmail.com>
diff --git a/src/validators/MobileVNValidator.php b/src/validators/MobileVNValidator.php
index e1bd2fe..34671e4 100644
--- a/src/validators/MobileVNValidator.php
+++ b/src/validators/MobileVNValidator.php
@@ -8,9 +8,9 @@
 
 namespace phpviet\yii\validation\validators;
 
-use PHPViet\Validation\Rules\MobileVN as PatternProvider;
 use Yii;
 use yii\validators\RegularExpressionValidator;
+use PHPViet\Validation\Rules\MobileVN as PatternProvider;
 
 /**
  * @author Vuong Minh <vuongxuongminh@gmail.com>
diff --git a/tests/TestCase.php b/tests/TestCase.php
index 1559457..b51a0d2 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -8,9 +8,9 @@
 
 namespace phpviet\yii\validation\tests;
 
-use PHPUnit\Framework\TestCase as BaseTestCase;
 use Yii;
 use yii\helpers\ArrayHelper;
+use PHPUnit\Framework\TestCase as BaseTestCase;
 
 /**
  * @author Vuong Minh <vuongxuongminh@gmail.com>