diff --git a/.github/workflows/rector.yml b/.github/workflows/rector.yml
new file mode 100644
index 00000000..adacd735
--- /dev/null
+++ b/.github/workflows/rector.yml
@@ -0,0 +1,21 @@
+on:
+  pull_request:
+    paths-ignore:
+      - 'docs/**'
+      - 'README.md'
+      - 'CHANGELOG.md'
+      - '.gitignore'
+      - '.gitattributes'
+      - 'infection.json.dist'
+      - 'psalm.xml'
+
+name: rector
+
+jobs:
+  rector:
+    uses: yiisoft/actions/.github/workflows/rector.yml@master
+    with:
+      os: >-
+        ['ubuntu-latest']
+      php: >-
+        ['8.0']
diff --git a/composer.json b/composer.json
index ac1d9ccc..e4f4250c 100644
--- a/composer.json
+++ b/composer.json
@@ -29,6 +29,7 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^9.5",
+        "rector/rector": "^0.15.7",
         "roave/infection-static-analysis-plugin": "^1.18",
         "spatie/phpunit-watcher": "^1.23",
         "vimeo/psalm": "^4.23",
diff --git a/rector.php b/rector.php
new file mode 100644
index 00000000..f55daaed
--- /dev/null
+++ b/rector.php
@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+use Rector\CodeQuality\Rector\Class_\InlineConstructorDefaultToPropertyRector;
+use Rector\Config\RectorConfig;
+use Rector\Php74\Rector\Closure\ClosureToArrowFunctionRector;
+use Rector\Set\ValueObject\LevelSetList;
+
+return static function (RectorConfig $rectorConfig): void {
+    $rectorConfig->paths([
+        __DIR__ . '/src',
+        __DIR__ . '/tests',
+    ]);
+
+    // register a single rule
+    $rectorConfig->rule(InlineConstructorDefaultToPropertyRector::class);
+
+    // define sets of rules
+    $rectorConfig->sets([
+        LevelSetList::UP_TO_PHP_80,
+    ]);
+
+    $rectorConfig->skip([
+        ClosureToArrowFunctionRector::class,
+    ]);
+};
diff --git a/src/Field.php b/src/Field.php
index 01c9fcac..3361153a 100644
--- a/src/Field.php
+++ b/src/Field.php
@@ -252,7 +252,7 @@ public static function field(string $class, array $config = []): object
 
     public static function getFactory(?string $name = null): FieldFactory
     {
-        $name = $name ?? self::$defaultConfigName;
+        $name ??= self::$defaultConfigName;
 
         if (!array_key_exists($name, self::$factories)) {
             if (!array_key_exists($name, self::$configs)) {
diff --git a/src/Field/Checkbox.php b/src/Field/Checkbox.php
index b65c9835..067977f4 100644
--- a/src/Field/Checkbox.php
+++ b/src/Field/Checkbox.php
@@ -98,8 +98,6 @@ public function enclosedByLabel(bool $value): self
      *
      * @param string|null $value
      *
-     * @return self
-     *
      * @link https://www.w3.org/TR/html52/sec-forms.html#the-label-element
      */
     public function inputLabel(?string $value): self
@@ -235,9 +233,9 @@ protected function generateInput(): string
         $inputAttributes = $this->getInputAttributes();
 
         $inputValue = $this->inputValue;
-        $inputValue = $inputValue ?? $this->prepareValue($inputAttributes['value'] ?? null);
+        $inputValue ??= $this->prepareValue($inputAttributes['value'] ?? null);
         unset($inputAttributes['value']);
-        $inputValue = $inputValue ?? '1';
+        $inputValue ??= '1';
 
         $checkbox = Html::checkbox($this->getInputName(), $inputValue, $inputAttributes);
 
diff --git a/src/Field/CheckboxList.php b/src/Field/CheckboxList.php
index 1a53b640..9f452e95 100644
--- a/src/Field/CheckboxList.php
+++ b/src/Field/CheckboxList.php
@@ -133,8 +133,6 @@ public function separator(string $separator): self
     }
 
     /**
-     * @param Closure|null $formatter
-     *
      * @psalm-param Closure(CheckboxItem):string|null $formatter
      */
     public function itemFormatter(?Closure $formatter): self
diff --git a/src/Field/ErrorSummary.php b/src/Field/ErrorSummary.php
index 349757b0..eaaa58d0 100644
--- a/src/Field/ErrorSummary.php
+++ b/src/Field/ErrorSummary.php
@@ -67,10 +67,6 @@ public function onlyAttributes(string ...$names): self
 
     /**
      * Set the footer text for the error summary
-     *
-     * @param string $value
-     *
-     * @return self
      */
     public function footer(string $value): self
     {
@@ -84,8 +80,6 @@ public function footer(string $value): self
      *
      * @param array $values Attribute values indexed by attribute names.
      *
-     * @return self
-     *
      * See {@see \Yiisoft\Html\Html::renderTagAttributes()} for details on how attributes are being rendered.
      */
     public function footerAttributes(array $values): self
@@ -97,10 +91,6 @@ public function footerAttributes(array $values): self
 
     /**
      * Set the header text for the error summary
-     *
-     * @param string $value
-     *
-     * @return self
      */
     public function header(string $value): self
     {
@@ -114,8 +104,6 @@ public function header(string $value): self
      *
      * @param array $values Attribute values indexed by attribute names.
      *
-     * @return self
-     *
      * See {@see \Yiisoft\Html\Html::renderTagAttributes()} for details on how attributes are being rendered.
      */
     public function headerAttributes(array $values): self
diff --git a/src/Field/Part/Error.php b/src/Field/Part/Error.php
index 1137d569..647917c8 100644
--- a/src/Field/Part/Error.php
+++ b/src/Field/Part/Error.php
@@ -106,8 +106,6 @@ public function class(?string ...$class): self
 
     /**
      * Whether content should be HTML-encoded.
-     *
-     * @param bool $value
      */
     public function encode(bool $value): self
     {
@@ -128,8 +126,6 @@ public function message(?string $value): self
 
     /**
      * Callback that will be called to obtain an error message.
-     *
-     * @param callable|null $value
      */
     public function messageCallback(?callable $value): self
     {
diff --git a/src/Field/Part/Hint.php b/src/Field/Part/Hint.php
index 4f75a2fa..68fdcf55 100644
--- a/src/Field/Part/Hint.php
+++ b/src/Field/Part/Hint.php
@@ -105,8 +105,6 @@ public function content(string|Stringable|null $content): self
 
     /**
      * Whether content should be HTML-encoded.
-     *
-     * @param bool $value
      */
     public function encode(bool $value): self
     {
diff --git a/src/Field/RadioList.php b/src/Field/RadioList.php
index 324ed9d8..8dba28ff 100644
--- a/src/Field/RadioList.php
+++ b/src/Field/RadioList.php
@@ -131,8 +131,6 @@ public function separator(string $separator): self
     }
 
     /**
-     * @param Closure|null $formatter
-     *
      * @psalm-param Closure(RadioItem):string|null $formatter
      */
     public function itemFormatter(?Closure $formatter): self
diff --git a/src/Field/Select.php b/src/Field/Select.php
index 25d297e8..4244c72e 100644
--- a/src/Field/Select.php
+++ b/src/Field/Select.php
@@ -86,8 +86,6 @@ public function options(Option ...$options): self
      * @param array[] $groupsAttributes Array of group attribute sets indexed by group labels from {@see $data}.
      *
      * @psalm-param array<array-key, string|array<array-key,string>> $data
-     *
-     * @return self
      */
     public function optionsData(
         array $data,
diff --git a/src/FormErrors.php b/src/FormErrors.php
index 03048dc0..3cdfb310 100644
--- a/src/FormErrors.php
+++ b/src/FormErrors.php
@@ -14,13 +14,12 @@
  */
 final class FormErrors implements FormErrorsInterface
 {
-    /** @psalm-var array<string, array<array-key, string>> */
-    private array $attributesErrors;
-
-    public function __construct(array $attributesErrors = [])
-    {
-        /** @psalm-var array<string, array<array-key, string>> */
-        $this->attributesErrors = $attributesErrors;
+    /**
+     * @psalm-param array<string, array<array-key, string>> $attributesErrors
+     */
+    public function __construct(
+        private array $attributesErrors = [],
+    ) {
     }
 
     public function addError(string $attribute, string $error): void
diff --git a/src/Helper/HtmlForm.php b/src/Helper/HtmlForm.php
index 7bc1eb45..93622f3c 100644
--- a/src/Helper/HtmlForm.php
+++ b/src/Helper/HtmlForm.php
@@ -18,8 +18,6 @@ final class HtmlForm
      *
      * @param FormModelInterface $formModel the form object.
      * @param string $attribute the attribute name or expression.
-     *
-     * @return string
      */
     public static function getAttributeHint(FormModelInterface $formModel, string $attribute): string
     {
@@ -33,8 +31,6 @@ public static function getAttributeHint(FormModelInterface $formModel, string $a
      * @param string $attribute the attribute name or expression.
      *
      * @throws InvalidArgumentException if the attribute name contains non-word characters.
-     *
-     * @return string
      */
     public static function getAttributeLabel(FormModelInterface $formModel, string $attribute): string
     {
@@ -72,8 +68,6 @@ public static function getAttributeName(FormModelInterface $formModel, string $a
      * @param string $attribute the attribute name or expression.
      *
      * @throws InvalidArgumentException if the attribute name contains non-word characters.
-     *
-     * @return string
      */
     public static function getAttributePlaceHolder(FormModelInterface $formModel, string $attribute): string
     {
diff --git a/tests/Field/CheckboxListTest.php b/tests/Field/CheckboxListTest.php
index bb24b339..c75aa0ce 100644
--- a/tests/Field/CheckboxListTest.php
+++ b/tests/Field/CheckboxListTest.php
@@ -321,9 +321,7 @@ public function testItemFormatter(): void
                 'blue' => 'Blue',
             ])
             ->formAttribute(new CheckboxListForm(), 'color')
-            ->itemFormatter(static function (CheckboxItem $item) {
-                return Html::checkbox($item->name, $item->value) . ' — ' . $item->label;
-            })
+            ->itemFormatter(static fn (CheckboxItem $item) => Html::checkbox($item->name, $item->value) . ' — ' . $item->label)
             ->render();
 
         $expected = <<<HTML
diff --git a/tests/Field/Part/ErrorTest.php b/tests/Field/Part/ErrorTest.php
index ff7c8d8f..dd1f96bc 100644
--- a/tests/Field/Part/ErrorTest.php
+++ b/tests/Field/Part/ErrorTest.php
@@ -231,9 +231,7 @@ public function testMessageCallback(): void
         $result = Error::widget()
             ->formAttribute($this->createValidatedErrorForm(), 'name')
             ->messageCallback(
-                static function (string $message, ?ErrorForm $form, ?string $attribute): string {
-                    return 'Attribute "' . $attribute . '" error: ' . $message;
-                }
+                static fn (string $message, ?ErrorForm $form, ?string $attribute): string => 'Attribute "' . $attribute . '" error: ' . $message
             )
             ->render();
 
@@ -246,9 +244,7 @@ public function testMessageCallbackWithCustomMessage(): void
             ->formAttribute($this->createValidatedErrorForm(), 'name')
             ->message('Invalid value.')
             ->messageCallback(
-                static function (string $message, ?ErrorForm $form, ?string $attribute): string {
-                    return 'Attribute "' . $attribute . '" error: ' . $message;
-                }
+                static fn (string $message, ?ErrorForm $form, ?string $attribute): string => 'Attribute "' . $attribute . '" error: ' . $message
             )
             ->render();
 
@@ -261,9 +257,7 @@ public function testMessageCallbackWithMessageAndWithoutError(): void
             ->formAttribute($this->createValidatedErrorForm(), 'age')
             ->message('Invalid value.')
             ->messageCallback(
-                static function (string $message, ?ErrorForm $form, ?string $attribute): string {
-                    return 'Attribute "' . $attribute . '" error: ' . $message;
-                }
+                static fn (string $message, ?ErrorForm $form, ?string $attribute): string => 'Attribute "' . $attribute . '" error: ' . $message
             )
             ->render();
 
diff --git a/tests/Field/RadioListTest.php b/tests/Field/RadioListTest.php
index cc8de6d2..7a3c7e97 100644
--- a/tests/Field/RadioListTest.php
+++ b/tests/Field/RadioListTest.php
@@ -455,15 +455,13 @@ public function testItemFormatter(): void
             ->hideLabel()
             ->items([1 => 'One', 2 => 'Two'])
             ->itemFormatter(
-                static function (RadioItem $item): string {
-                    return '<div>' .
-                        $item->index . ') ' .
-                        Html::radio($item->radioAttributes['name'], $item->radioAttributes['value'])
-                            ->attributes($item->radioAttributes)
-                            ->checked($item->checked)
-                            ->label($item->label) .
-                        '</div>';
-                }
+                static fn (RadioItem $item): string => '<div>' .
+                    $item->index . ') ' .
+                    Html::radio($item->radioAttributes['name'], $item->radioAttributes['value'])
+                        ->attributes($item->radioAttributes)
+                        ->checked($item->checked)
+                        ->label($item->label) .
+                    '</div>'
             )
             ->render();
 
diff --git a/tests/Field/RangeTest.php b/tests/Field/RangeTest.php
index 2f6e84a3..5ee6b77b 100644
--- a/tests/Field/RangeTest.php
+++ b/tests/Field/RangeTest.php
@@ -47,13 +47,13 @@ public function testAddOutputAttributes(): void
             ->addOutputAttributes(['id' => 'UID'])
             ->render();
 
-        $expected = <<<HTML
-            <div>
-            <label for="rangeform-volume">Volume level</label>
-            <input type="range" id="rangeform-volume" name="RangeForm[volume]" value="23" oninput="document.getElementById(&quot;UID&quot;).innerHTML=this.value">
-            <span id="UID" class="red">23</span>
-            </div>
-            HTML;
+        $expected = <<<HTML_WRAP
+<div>
+<label for="rangeform-volume">Volume level</label>
+<input type="range" id="rangeform-volume" name="RangeForm[volume]" value="23" oninput="document.getElementById(&quot;UID&quot;).innerHTML=this.value">
+<span id="UID" class="red">23</span>
+</div>
+HTML_WRAP;
 
         $this->assertSame($expected, $result);
     }
@@ -67,13 +67,13 @@ public function testOutputAttributes(): void
             ->outputAttributes(['id' => 'UID'])
             ->render();
 
-        $expected = <<<HTML
-            <div>
-            <label for="rangeform-volume">Volume level</label>
-            <input type="range" id="rangeform-volume" name="RangeForm[volume]" value="23" oninput="document.getElementById(&quot;UID&quot;).innerHTML=this.value">
-            <span id="UID">23</span>
-            </div>
-            HTML;
+        $expected = <<<HTML_WRAP
+<div>
+<label for="rangeform-volume">Volume level</label>
+<input type="range" id="rangeform-volume" name="RangeForm[volume]" value="23" oninput="document.getElementById(&quot;UID&quot;).innerHTML=this.value">
+<span id="UID">23</span>
+</div>
+HTML_WRAP;
 
         $this->assertSame($expected, $result);
     }
@@ -88,13 +88,13 @@ public function testWithOutput(): void
             ->outputAttributes(['id' => 'UID'])
             ->render();
 
-        $expected = <<<HTML
-            <div>
-            <label for="rangeform-volume">Volume level</label>
-            <input type="range" id="rangeform-volume" name="RangeForm[volume]" value="23" min="1" max="100" oninput="document.getElementById(&quot;UID&quot;).innerHTML=this.value">
-            <span id="UID">23</span>
-            </div>
-            HTML;
+        $expected = <<<HTML_WRAP
+<div>
+<label for="rangeform-volume">Volume level</label>
+<input type="range" id="rangeform-volume" name="RangeForm[volume]" value="23" min="1" max="100" oninput="document.getElementById(&quot;UID&quot;).innerHTML=this.value">
+<span id="UID">23</span>
+</div>
+HTML_WRAP;
 
         $this->assertSame($expected, $result);
     }
@@ -108,13 +108,13 @@ public function testCustomOutputTag(): void
             ->outputAttributes(['id' => 'UID'])
             ->render();
 
-        $expected = <<<HTML
-            <div>
-            <label for="rangeform-volume">Volume level</label>
-            <input type="range" id="rangeform-volume" name="RangeForm[volume]" value="23" oninput="document.getElementById(&quot;UID&quot;).innerHTML=this.value">
-            <div id="UID">23</div>
-            </div>
-            HTML;
+        $expected = <<<HTML_WRAP
+<div>
+<label for="rangeform-volume">Volume level</label>
+<input type="range" id="rangeform-volume" name="RangeForm[volume]" value="23" oninput="document.getElementById(&quot;UID&quot;).innerHTML=this.value">
+<div id="UID">23</div>
+</div>
+HTML_WRAP;
 
         $this->assertSame($expected, $result);
     }
diff --git a/tests/Helper/HtmlFormTest.php b/tests/Helper/HtmlFormTest.php
index e1a2df65..4d0a6871 100644
--- a/tests/Helper/HtmlFormTest.php
+++ b/tests/Helper/HtmlFormTest.php
@@ -84,10 +84,6 @@ public function dataGetInputName(): array
 
     /**
      * @dataProvider dataGetInputName
-     *
-     * @param FormModelInterface $form
-     * @param string $attribute
-     * @param string $expected
      */
     public function testGetInputName(FormModelInterface $form, string $attribute, string $expected): void
     {
diff --git a/tests/Support/StringableObject.php b/tests/Support/StringableObject.php
index 8dfc0230..331a17cf 100644
--- a/tests/Support/StringableObject.php
+++ b/tests/Support/StringableObject.php
@@ -4,13 +4,13 @@
 
 namespace Yiisoft\Form\Tests\Support;
 
-final class StringableObject
-{
-    private string $string;
+use Stringable;
 
-    public function __construct(string $string)
-    {
-        $this->string = $string;
+final class StringableObject implements Stringable
+{
+    public function __construct(
+        private string $string
+    ) {
     }
 
     public function __toString(): string
diff --git a/tests/TestSupport/CustomFormErrors.php b/tests/TestSupport/CustomFormErrors.php
index 56975b76..db764d68 100644
--- a/tests/TestSupport/CustomFormErrors.php
+++ b/tests/TestSupport/CustomFormErrors.php
@@ -8,13 +8,9 @@
 
 final class CustomFormErrors implements FormErrorsInterface
 {
-    /** @psalm-var array<string, array<array-key, string>> */
-    private array $attributesErrors;
-
-    public function __construct(array $attributesErrors = [])
-    {
-        /** @psalm-var array<string, array<array-key, string>> */
-        $this->attributesErrors = $attributesErrors;
+    public function __construct(
+        private array $attributesErrors = [],
+    ) {
     }
 
     public function addError(string $attribute, string $error): void
diff --git a/tests/TestSupport/TestTrait.php b/tests/TestSupport/TestTrait.php
index d27f37a4..0efb53cc 100644
--- a/tests/TestSupport/TestTrait.php
+++ b/tests/TestSupport/TestTrait.php
@@ -17,10 +17,6 @@ trait TestTrait
 {
     /**
      * Asserting two strings equality ignoring line endings.
-     *
-     * @param string $expected
-     * @param string $actual
-     * @param string $message
      */
     protected function assertEqualsWithoutLE(string $expected, string $actual, string $message = ''): void
     {
@@ -38,9 +34,6 @@ private function createValidatorMock(): ValidatorInterface
     /**
      * Invokes an inaccessible method.
      *
-     * @param object $object
-     * @param string $method
-     * @param array $args
      * @param bool $revoke whether to make method inaccessible after execution.
      *
      * @throws ReflectionException
@@ -64,12 +57,9 @@ protected function invokeMethod(object $object, string $method, array $args = []
     /**
      * Sets an inaccessible object property to a designated value.
      *
-     * @param object $object
-     * @param string $propertyName
-     * @param mixed $value
      * @param bool $revoke whether to make property inaccessible after setting
      */
-    protected function setInaccessibleProperty(object $object, string $propertyName, $value, bool $revoke = true): void
+    protected function setInaccessibleProperty(object $object, string $propertyName, mixed $value, bool $revoke = true): void
     {
         $class = new ReflectionClass($object);