diff --git a/rector.php b/rector.php
index 628b2dae3..dfa97768d 100644
--- a/rector.php
+++ b/rector.php
@@ -28,7 +28,6 @@
 
     $rectorConfig->sets([
         LevelSetList::UP_TO_PHP_81,
-        PHPUnitSetList::PHPUNIT_100,
         PHPUnitSetList::PHPUNIT_CODE_QUALITY,
     ]);
 
diff --git a/src/Github/Domain/Value/Hook/Config.php b/src/Github/Domain/Value/Hook/Config.php
index b072a3766..429cbd75e 100644
--- a/src/Github/Domain/Value/Hook/Config.php
+++ b/src/Github/Domain/Value/Hook/Config.php
@@ -55,7 +55,7 @@ public function url(): Url
     }
 
     /**
-     * @param array<mixed> $config
+     * @param array<string, string> $config
      */
     public function equals(array $config): bool
     {
diff --git a/src/Github/Domain/Value/Hook/Events.php b/src/Github/Domain/Value/Hook/Events.php
index 44fd40a27..808a9440f 100644
--- a/src/Github/Domain/Value/Hook/Events.php
+++ b/src/Github/Domain/Value/Hook/Events.php
@@ -46,7 +46,7 @@ public static function fromArray(array $events): self
     }
 
     /**
-     * @param array<mixed> $events
+     * @param array<string> $events
      */
     public function equals(array $events): bool
     {
diff --git a/templates/project/rector.php.twig b/templates/project/rector.php.twig
index bc636f54e..ad89afd86 100644
--- a/templates/project/rector.php.twig
+++ b/templates/project/rector.php.twig
@@ -35,7 +35,6 @@ return static function (RectorConfig $rectorConfig): void {
 
     $rectorConfig->sets([
         LevelSetList::UP_TO_PHP_{{ branch.lowestPhpVersion.rectorFormat }},
-        PHPUnitSetList::PHPUNIT_100,
         PHPUnitSetList::PHPUNIT_CODE_QUALITY,
     ]);
 
diff --git a/tests/Twig/Extension/FileSystemExtensionTest.php b/tests/Twig/Extension/FileSystemExtensionTest.php
index a045fcae9..d41271f60 100644
--- a/tests/Twig/Extension/FileSystemExtensionTest.php
+++ b/tests/Twig/Extension/FileSystemExtensionTest.php
@@ -25,8 +25,7 @@ protected function setUp(): void
     {
         parent::setUp();
 
-        $fileSystem = $this->createMock(Filesystem::class);
-        $this->fileSystemExtension = new FileSystemExtension($fileSystem);
+        $this->fileSystemExtension = new FileSystemExtension(static::createStub(Filesystem::class));
     }
 
     public function testHasDependency(): void