diff --git a/src/Version.php b/src/Version.php
index 3eaf832d..33d89fc9 100644
--- a/src/Version.php
+++ b/src/Version.php
@@ -20,10 +20,8 @@ final class Version
 {
     /**
      * @see https://github.com/box-project/box/blob/master/doc/configuration.md#pretty-git-tag-placeholder-git
-     *
-     * @var string
      */
-    private static $version = '@git@';
+    private static string $version = '@git@';
 
     public static function long(): string
     {
diff --git a/test/Integration/Command/NormalizeCommand/AbstractTestCase.php b/test/Integration/Command/NormalizeCommand/AbstractTestCase.php
index 3de20954..3d2626c0 100644
--- a/test/Integration/Command/NormalizeCommand/AbstractTestCase.php
+++ b/test/Integration/Command/NormalizeCommand/AbstractTestCase.php
@@ -29,11 +29,7 @@
 abstract class AbstractTestCase extends Framework\TestCase
 {
     use Test\Util\Helper;
-
-    /**
-     * @var string
-     */
-    private $currentWorkingDirectory;
+    private string $currentWorkingDirectory;
 
     final protected function setUp(): void
     {
diff --git a/test/Integration/Command/NormalizeCommand/Normalizer/Throws/Test.php b/test/Integration/Command/NormalizeCommand/Normalizer/Throws/Test.php
index 8d40952a..67dc1744 100644
--- a/test/Integration/Command/NormalizeCommand/Normalizer/Throws/Test.php
+++ b/test/Integration/Command/NormalizeCommand/Normalizer/Throws/Test.php
@@ -52,10 +52,7 @@ public function testFailsWhenNormalizerThrowsRuntimeExceptionDuringNormalization
         $application = self::createApplication(new NormalizeCommand(
             new Factory(),
             new class($exceptionMessage) implements Normalizer\NormalizerInterface {
-                /**
-                 * @var string
-                 */
-                private $exceptionMessage;
+                private string $exceptionMessage;
 
                 public function __construct(string $exceptionMessage)
                 {
diff --git a/test/Util/CommandInvocation.php b/test/Util/CommandInvocation.php
index 2e073fe6..589a1109 100644
--- a/test/Util/CommandInvocation.php
+++ b/test/Util/CommandInvocation.php
@@ -15,10 +15,7 @@
 
 final class CommandInvocation
 {
-    /**
-     * @var string
-     */
-    private $style;
+    private string $style;
 
     private function __construct(string $variation)
     {
diff --git a/test/Util/Directory.php b/test/Util/Directory.php
index b134bc1d..500b8f8f 100644
--- a/test/Util/Directory.php
+++ b/test/Util/Directory.php
@@ -15,15 +15,8 @@
 
 final class Directory
 {
-    /**
-     * @var string
-     */
-    private $path;
-
-    /**
-     * @var bool
-     */
-    private $exists;
+    private string $path;
+    private bool $exists;
 
     private function __construct(string $path)
     {
diff --git a/test/Util/File.php b/test/Util/File.php
index 39fa5304..708ce263 100644
--- a/test/Util/File.php
+++ b/test/Util/File.php
@@ -15,20 +15,9 @@
 
 final class File
 {
-    /**
-     * @var string
-     */
-    private $path;
-
-    /**
-     * @var bool
-     */
-    private $exists = false;
-
-    /**
-     * @var null|string
-     */
-    private $contents;
+    private string $path;
+    private bool $exists = false;
+    private ?string $contents;
 
     private function __construct()
     {
diff --git a/test/Util/Scenario.php b/test/Util/Scenario.php
index 667ca91b..0eaeb224 100644
--- a/test/Util/Scenario.php
+++ b/test/Util/Scenario.php
@@ -15,15 +15,8 @@
 
 final class Scenario
 {
-    /**
-     * @var CommandInvocation
-     */
-    private $commandInvocation;
-
-    /**
-     * @var State
-     */
-    private $initialState;
+    private CommandInvocation $commandInvocation;
+    private State $initialState;
 
     private function __construct(CommandInvocation $commandInvocation, State $initialState)
     {
diff --git a/test/Util/State.php b/test/Util/State.php
index 6adf69e1..a999fc38 100644
--- a/test/Util/State.php
+++ b/test/Util/State.php
@@ -15,25 +15,10 @@
 
 final class State
 {
-    /**
-     * @var Directory
-     */
-    private $directory;
-
-    /**
-     * @var File
-     */
-    private $composerJsonFile;
-
-    /**
-     * @var File
-     */
-    private $composerLockFile;
-
-    /**
-     * @var Directory
-     */
-    private $vendorDirectory;
+    private Directory $directory;
+    private File $composerJsonFile;
+    private File $composerLockFile;
+    private Directory $vendorDirectory;
 
     private function __construct(Directory $directory)
     {