diff --git a/.github/workflows/tag_meged_pull_request.yml b/.github/workflows/tag_meged_pull_request.yml
index 5739c59..044bba3 100644
--- a/.github/workflows/tag_meged_pull_request.yml
+++ b/.github/workflows/tag_meged_pull_request.yml
@@ -23,7 +23,7 @@ jobs:
           tools: composer:v2
 
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/test_pull_request.yml b/.github/workflows/test_pull_request.yml
index 698327c..b72af4f 100644
--- a/.github/workflows/test_pull_request.yml
+++ b/.github/workflows/test_pull_request.yml
@@ -15,7 +15,7 @@ jobs:
           tools: composer:v2
 
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -63,12 +63,12 @@ jobs:
           tools: composer:v2
 
       - name: Set up Node
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version: '14.x'
 
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -126,12 +126,12 @@ jobs:
           tools: composer:v2
 
       - name: Set up Node
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version: '14.x'
 
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -139,7 +139,7 @@ jobs:
         run: composer install --no-interaction
 
       - name: Update PHPUnit for Code Coverage
-        run: composer require phpunit/phpunit:^9.6 phploc/phploc:* sebastian/version:* --with-all-dependencies
+        run: composer require phpunit/phpunit:^10.5 sebastian/version:* --with-all-dependencies
 
       - name: PHP Lint
         run: ./vendor/bin/parallel-lint src tests examples
@@ -147,4 +147,4 @@ jobs:
       - name: Unit tests
         run: |
           mkdir -p build/logs
-          ./vendor/bin/phpunit ./tests/ --coverage-clover build/logs/clover.xml
+          XDEBUG_MODE=coverage ./vendor/bin/phpunit ./tests/ --coverage-clover build/logs/clover.xml --coverage-filter=./src/
diff --git a/.gitignore b/.gitignore
index 6989baa..5819720 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
-
+composer.lock
+.php-version
 /vendor
 /.phpunit.cache
 .phpunit.result.cache
diff --git a/README.md b/README.md
index d6fa733..b38c67a 100644
--- a/README.md
+++ b/README.md
@@ -69,7 +69,7 @@ composer require macocci7/php-boxplot
     ```php
     <?php
 
-    require('../vendor/autoload.php');
+    require_once __DIR__ . '/../vendor/autoload.php';
 
     use Macocci7\PhpBoxplot\Boxplot;
 
@@ -97,7 +97,7 @@ composer require macocci7/php-boxplot
     - The hash keys of the data are used as the labels for the X axis.
 
 - Details:
-    - Import Autoloader: `require_once('../vendor/autoload.php')`
+    - Import Autoloader: `require_once __DIR__ . '/../vendor/autoload.php'`
     - Declare: `use Macocci7\PhpBoxplot\Boxplot`
     - Instantiate: `new Boxplot()`
     - Set Data: `setData($data)`
@@ -117,7 +117,7 @@ And Setting Caption can be done as follows:
     ```php
     <?php
 
-    require('../vendor/autoload.php');
+    require_once __DIR__ . '/../vendor/autoload.php';
 
     use Macocci7\PhpBoxplot\Boxplot;
 
@@ -202,7 +202,7 @@ Multiple datasets can be displayed side by side at the same time.
     ```php
     <?php
 
-    require_once('../vendor/autoload.php');
+    require_once __DIR__ . '/../vendor/autoload.php';
 
     use Macocci7\PhpBoxplot\Boxplot;
 
@@ -370,7 +370,7 @@ Second, Code PHP like this:
     ```php
     <?php
 
-    require_once('../vendor/autoload.php');
+    require_once __DIR__ . '/../vendor/autoload.php';
 
     use Macocci7\PhpBoxplot\Boxplot;
 
@@ -394,7 +394,7 @@ You can Adjust the Display by using Array.
     ```php
     <?php
 
-    require_once('../vendor/autoload.php');
+    require_once __DIR__ . '/../vendor/autoload.php';
 
     use Macocci7\PhpBoxplot\Boxplot;
 
@@ -460,7 +460,7 @@ You can set transparent background like this.
     ```php
     <?php
 
-    require_once('../vendor/autoload.php');
+    require_once __DIR__ . '/../vendor/autoload.php';
 
     use Macocci7\PhpBoxplot\Boxplot;
 
@@ -545,6 +545,6 @@ You can set transparent background like this.
 
 *Document created: 2023/05/28*
 
-*Document updated: 2024/03/09*
+*Document updated: 2024/04/18*
 
 Copyright 2023 - 2024 macocci7
diff --git a/bin/TestAndLint.sh b/bin/TestAndLint.sh
index 7296f47..21f3585 100644
--- a/bin/TestAndLint.sh
+++ b/bin/TestAndLint.sh
@@ -55,7 +55,7 @@ test_and_lint() {
     echo "-----------------------------------------------------------"
     echo "[PHP $1][phpunit]"
     ./vendor/bin/phpunit ./tests/ \
-                         --color auto
+                         --color=auto
     echo "-----------------------------------------------------------"
 }
 
diff --git a/composer.json b/composer.json
index 8d9bed1..8275661 100644
--- a/composer.json
+++ b/composer.json
@@ -1,20 +1,20 @@
 {
     "name": "macocci7/php-boxplot",
-    "version": "1.1.1",
+    "version": "1.2.0",
     "description": "it's easy to use for creating boxplots.",
     "type": "library",
     "require": {
-        "intervention/image": "^3.4",
-        "macocci7/php-frequency-table": "1.2.0",
+        "php": ">=8.1",
+        "intervention/image": "^3.5",
+        "macocci7/php-frequency-table": "1.3.0",
         "fakerphp/faker": "^1.22",
         "nette/neon": "^3.4"
     },
     "require-dev": {
         "squizlabs/php_codesniffer": "^3.7",
-        "phpunit/phpunit": "^9.6",
+        "phpunit/phpunit": "^10.5",
         "phpmd/phpmd": "^2.15",
         "phpstan/phpstan": "^1.10",
-        "phploc/phploc": "^7.0",
         "php-parallel-lint/php-parallel-lint": "^1.3"
     },
     "license": "MIT",
diff --git a/examples/AdjustDisplayByArray.php b/examples/AdjustDisplayByArray.php
index 29e5fed..359e422 100644
--- a/examples/AdjustDisplayByArray.php
+++ b/examples/AdjustDisplayByArray.php
@@ -1,6 +1,6 @@
 <?php
 
-require_once('../vendor/autoload.php');
+require_once __DIR__ . '/../vendor/autoload.php';
 
 use Macocci7\PhpBoxplot\Boxplot;
 
diff --git a/examples/AdjustDisplayByMethods.php b/examples/AdjustDisplayByMethods.php
index b0448e0..d92c361 100644
--- a/examples/AdjustDisplayByMethods.php
+++ b/examples/AdjustDisplayByMethods.php
@@ -1,6 +1,6 @@
 <?php
 
-require('../vendor/autoload.php');
+require_once __DIR__ . '/../vendor/autoload.php';
 
 use Macocci7\PhpBoxplot\Boxplot;
 
diff --git a/examples/AdjustDisplayByNeon.php b/examples/AdjustDisplayByNeon.php
index ac031c8..6a6d79c 100644
--- a/examples/AdjustDisplayByNeon.php
+++ b/examples/AdjustDisplayByNeon.php
@@ -1,6 +1,6 @@
 <?php
 
-require_once('../vendor/autoload.php');
+require_once __DIR__ . '/../vendor/autoload.php';
 
 use Macocci7\PhpBoxplot\Boxplot;
 
diff --git a/examples/BasicUsage.php b/examples/BasicUsage.php
index 91103d2..6ae494f 100644
--- a/examples/BasicUsage.php
+++ b/examples/BasicUsage.php
@@ -1,6 +1,6 @@
 <?php
 
-require('../vendor/autoload.php');
+require_once __DIR__ . '/../vendor/autoload.php';
 
 use Macocci7\PhpBoxplot\Boxplot;
 
diff --git a/examples/BoxplotExampleCase.php b/examples/BoxplotExampleCase.php
index e00d654..143aff3 100644
--- a/examples/BoxplotExampleCase.php
+++ b/examples/BoxplotExampleCase.php
@@ -1,6 +1,6 @@
 <?php
 
-require('../vendor/autoload.php');
+require_once __DIR__ . '/../vendor/autoload.php';
 
 use Macocci7\PhpBoxplot\Boxplot;
 
diff --git a/examples/DetmersReidBoxplot2023.php b/examples/DetmersReidBoxplot2023.php
index e8bd24e..4b281d1 100644
--- a/examples/DetmersReidBoxplot2023.php
+++ b/examples/DetmersReidBoxplot2023.php
@@ -2,8 +2,8 @@
 
 namespace Macocci7;
 
-require('../vendor/autoload.php');
-require('./class/CsvUtil.php');
+require_once __DIR__ . '/../vendor/autoload.php';
+require_once __DIR__ . '/class/CsvUtil.php';
 
 use Macocci7\PhpBoxplot\Boxplot;
 use Macocci7\CsvUtil;
diff --git a/examples/MultipleDataSet.php b/examples/MultipleDataSet.php
index 15fc86d..33557c5 100644
--- a/examples/MultipleDataSet.php
+++ b/examples/MultipleDataSet.php
@@ -1,6 +1,6 @@
 <?php
 
-require_once('../vendor/autoload.php');
+require_once __DIR__ . '/../vendor/autoload.php';
 
 use Macocci7\PhpBoxplot\Boxplot;
 
diff --git a/examples/TransparentBackground.php b/examples/TransparentBackground.php
index 4dc036b..6382923 100644
--- a/examples/TransparentBackground.php
+++ b/examples/TransparentBackground.php
@@ -1,6 +1,6 @@
 <?php
 
-require_once('../vendor/autoload.php');
+require_once __DIR__ . '/../vendor/autoload.php';
 
 use Macocci7\PhpBoxplot\Boxplot;
 
diff --git a/examples/img/BoxplotExampleCase.png b/examples/img/BoxplotExampleCase.png
index aac6705..67b2285 100644
Binary files a/examples/img/BoxplotExampleCase.png and b/examples/img/BoxplotExampleCase.png differ
diff --git a/phpmd.xml b/phpmd.xml
index a967895..bc07190 100644
--- a/phpmd.xml
+++ b/phpmd.xml
@@ -7,6 +7,7 @@
     <!-- 除外するルール -->
     <exclude name="MissingImport" />
     <exclude name="StaticAccess" />
+    <exclude name="ElseExpression" />
   </rule>
   <rule ref="rulesets/codesize.xml" />
   <rule ref="rulesets/controversial.xml" />
diff --git a/tests/AnalyzerTest.php b/tests/AnalyzerTest.php
index fd05406..557d276 100644
--- a/tests/AnalyzerTest.php
+++ b/tests/AnalyzerTest.php
@@ -4,14 +4,13 @@
 
 namespace Macocci7\PhpBoxplot;
 
-require('vendor/autoload.php');
-
+use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 use Macocci7\PhpBoxplot\Analyzer;
 
 /**
- * @SuppressWarnings(PHPMD.CamelCaseMethodName)
  * @SuppressWarnings(PHPMD.TooManyPublicMethods)
+ * @SuppressWarnings(PHPMD.CamelCaseMethodName)
  */
 final class AnalyzerTest extends TestCase
 {
@@ -25,9 +24,7 @@ public static function provide_limit_throw_exception_with_invalid_params(): arra
         ];
     }
 
-    /**
-     * @dataProvider provide_limit_throw_exception_with_invalid_params
-     */
+    #[DataProvider('provide_limit_throw_exception_with_invalid_params')]
     public function test_limit_throw_exception_with_invalid_params(int|float $lower, int|float $upper): void
     {
         $a = new Analyzer();
@@ -46,9 +43,7 @@ public static function provide_limit_can_set_limit_correctly(): array
         ];
     }
 
-    /**
-     * @dataProvider provide_limit_can_set_limit_correctly
-     */
+    #[DataProvider('provide_limit_can_set_limit_correctly')]
     public function test_limit_can_set_limit_correctly(int|float $lower, int|float $upper): void
     {
         $a = new Analyzer();
@@ -75,9 +70,7 @@ public static function provide_getMean_can_get_mean_correctly(): array
         ];
     }
 
-    /**
-     * @dataProvider provide_getMean_can_get_mean_correctly
-     */
+    #[DataProvider('provide_getMean_can_get_mean_correctly')]
     public function test_getMean_can_get_mean_correctly(array $data, int|float|null $expect): void
     {
         $bp = new Boxplot();
@@ -94,9 +87,7 @@ public static function provide_getUcl_can_get_ucl_correctly(): array
         ];
     }
 
-    /**
-     * @dataProvider provide_getUcl_can_get_ucl_correctly
-     */
+    #[DataProvider('provide_getUcl_can_get_ucl_correctly')]
     public function test_getUcl_can_get_ucl_correctly(array $data, float|null $expect): void
     {
         $a = new Analyzer();
@@ -117,9 +108,7 @@ public static function provide_getLcl_can_get_lcl_correctly(): array
         ];
     }
 
-    /**
-     * @dataProvider provide_getLcl_can_get_lcl_correctly
-     */
+    #[DataProvider('provide_getLcl_can_get_lcl_correctly')]
     public function test_getLcl_can_get_lcl_correctly(array $data, float|null $expect): void
     {
         $a = new Analyzer();
@@ -143,9 +132,7 @@ public static function provide_getOutliers_can_get_outliers_correctly(): array
         ];
     }
 
-    /**
-     * @dataProvider provide_getOutliers_can_get_outliers_correctly
-     */
+    #[DataProvider('provide_getOutliers_can_get_outliers_correctly')]
     public function test_getOutliers_can_get_outliers_correctly(array $data, array|null $expect): void
     {
         $a = new Analyzer();
diff --git a/tests/Helpers/ConfigTest.php b/tests/Helpers/ConfigTest.php
index 5034e15..fb9f8c6 100644
--- a/tests/Helpers/ConfigTest.php
+++ b/tests/Helpers/ConfigTest.php
@@ -4,13 +4,12 @@
 
 namespace Macocci7\PhpBoplot\Helpers;
 
+use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 use Macocci7\PhpBoxplot\Helpers\Config;
 use Nette\Neon\Neon;
 
 /**
- * @SuppressWarnings(PHPMD.TooManyMethods)
- * @SuppressWarnings(PHPMD.TooManyPublicMethods)
  * @SuppressWarnings(PHPMD.CamelCaseMethodName)
  */
 final class ConfigTest extends TestCase
@@ -59,9 +58,7 @@ public static function provide_className_can_return_class_name_correctly(): arra
         ];
     }
 
-    /**
-     * @dataProvider provide_className_can_return_class_name_correctly
-     */
+    #[DataProvider('provide_className_can_return_class_name_correctly')]
     public function test_className_can_return_class_name_correctly(string $class, string $expect): void
     {
         $this->assertSame($expect, Config::className($class));
@@ -91,9 +88,7 @@ public static function provide_support_object_like_keys_correctly(): array
         ];
     }
 
-    /**
-     * @dataProvider provide_support_object_like_keys_correctly
-     */
+    #[DataProvider('provide_support_object_like_keys_correctly')]
     public function get_can_support_object_like_keys_correctly(string $key, array|null $expect): void
     {
         $this->assertSame($expect, Config::get($key));
diff --git a/tests/Traits/JudgeTraitTest.php b/tests/Traits/JudgeTraitTest.php
index 6819e2b..0dd3709 100644
--- a/tests/Traits/JudgeTraitTest.php
+++ b/tests/Traits/JudgeTraitTest.php
@@ -4,12 +4,12 @@
 
 namespace Macocci7\PhpBoxplot\Traits;
 
+use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 use Macocci7\PhpBoxplot\Traits\JudgeTrait;
 use Nette\Neon\Neon;
 
 /**
- * @SuppressWarnings(PHPMD.TooManyMethods)
  * @SuppressWarnings(PHPMD.TooManyPublicMethods)
  * @SuppressWarnings(PHPMD.CamelCaseMethodName)
  */
@@ -40,9 +40,7 @@ public static function provide_isIntAll_can_judge_correctly(): array
         ];
     }
 
-    /**
-     * @dataProvider provide_isIntAll_can_judge_correctly
-     */
+    #[DataProvider('provide_isIntAll_can_judge_correctly')]
     public function test_isIntAll_can_judge_correctly(array $items, bool $expect): void
     {
         $this->assertSame($expect, self::isIntAll($items));
@@ -71,9 +69,7 @@ public static function provide_isNumber_can_judge_correctly(): array
         ];
     }
 
-    /**
-     * @dataProvider provide_isNumber_can_judge_correctly
-     */
+    #[DataProvider('provide_isNumber_can_judge_correctly')]
     public function test_isNumber_can_judge_correctly(mixed $item, bool $expect): void
     {
         $this->assertSame($expect, self::isNumber($item));
@@ -102,9 +98,7 @@ public static function provide_isNumbersAll_can_judge_correctly(): array
         ];
     }
 
-    /**
-     * @dataProvider provide_isNumbersAll_can_judge_correctly
-     */
+    #[DataProvider('provide_isNumbersAll_can_judge_correctly')]
     public function test_isNumbersAll_can_judge_correctly(mixed $items, bool $expect): void
     {
         $this->assertSame($expect, self::isNumbersAll($items));
@@ -135,9 +129,7 @@ public static function provide_isColorCode_can_judge_correctly(): array
         ];
     }
 
-    /**
-     * @dataProvider provide_isColorCode_can_judge_correctly
-     */
+    #[DataProvider('provide_isColorCode_can_judge_correctly')]
     public function test_isColorCode_can_judge_correctly(string $color, bool $expect): void
     {
         $this->assertSame($expect, self::isColorCode($color));
@@ -159,9 +151,7 @@ public static function provide_isColorCodeAll_can_judge_correctly(): array
         ];
     }
 
-    /**
-     * @dataProvider provide_isColorCodeAll_can_judge_correctly
-     */
+    #[DataProvider('provide_isColorCodeAll_can_judge_correctly')]
     public function test_isColorCodeAll_can_judge_correctly(array $params, bool $expect): void
     {
         $this->assertSame($expect, self::isColorCodeAll($params));
@@ -248,9 +238,7 @@ public static function provide_isValidType_can_judge_correctly(): array
         ];
     }
 
-    /**
-     * @dataProvider provide_isValidType_can_judge_correctly
-     */
+    #[DataProvider('provide_isValidType_can_judge_correctly')]
     public function test_isValidType_can_judge_correctly(mixed $input, string $def, bool $expect): void
     {
         $this->assertSame($expect, self::isValidType($input, $def));
@@ -286,9 +274,7 @@ public static function provide_isValidData_can_judge_correctly(): array
         ];
     }
 
-    /**
-     * @dataProvider provide_isValidData_can_judge_correctly
-     */
+    #[DataProvider('provide_isValidData_can_judge_correctly')]
     public function test_isValidData_can_judge_correctly(mixed $data, bool $expect): void
     {
         $this->assertSame($expect, self::isValidData($data));
@@ -366,9 +352,7 @@ public static function provide_isValidDataset_can_judge_correctly(): array
         ];
     }
 
-    /**
-     * @dataProvider provide_isValidDataset_can_judge_correctly
-     */
+    #[DataProvider('provide_isValidDataset_can_judge_correctly')]
     public function test_isValidDataset_can_judge_correctly(mixed $dataset, bool $expect): void
     {
         $this->assertSame($expect, self::isValidDataset($dataset));