diff --git a/src/Symfony/Bridge/Twig/Command/LintCommand.php b/src/Symfony/Bridge/Twig/Command/LintCommand.php
index d2f7542af7435..9ea2ff7eb69a7 100644
--- a/src/Symfony/Bridge/Twig/Command/LintCommand.php
+++ b/src/Symfony/Bridge/Twig/Command/LintCommand.php
@@ -107,7 +107,7 @@ private function getFilesInfo(array $filenames)
         return $filesInfo;
     }
 
-    protected function findFiles($filename)
+    protected function findFiles(string $filename)
     {
         if (is_file($filename)) {
             return [$filename];
diff --git a/src/Symfony/Bundle/TwigBundle/CacheWarmer/TemplateCacheWarmer.php b/src/Symfony/Bundle/TwigBundle/CacheWarmer/TemplateCacheWarmer.php
index be4c56d83033f..9de093676ba80 100644
--- a/src/Symfony/Bundle/TwigBundle/CacheWarmer/TemplateCacheWarmer.php
+++ b/src/Symfony/Bundle/TwigBundle/CacheWarmer/TemplateCacheWarmer.php
@@ -38,7 +38,7 @@ public function __construct(ContainerInterface $container, iterable $iterator)
     /**
      * {@inheritdoc}
      */
-    public function warmUp($cacheDir)
+    public function warmUp(string $cacheDir)
     {
         if (null === $this->twig) {
             $this->twig = $this->container->get('twig');
diff --git a/src/Symfony/Bundle/TwigBundle/Command/LintCommand.php b/src/Symfony/Bundle/TwigBundle/Command/LintCommand.php
index c0b175c3a2ed8..277c6a19fa03d 100644
--- a/src/Symfony/Bundle/TwigBundle/Command/LintCommand.php
+++ b/src/Symfony/Bundle/TwigBundle/Command/LintCommand.php
@@ -42,7 +42,7 @@ protected function configure()
         ;
     }
 
-    protected function findFiles($filename)
+    protected function findFiles(string $filename)
     {
         if (0 === strpos($filename, '@')) {
             $dir = $this->getApplication()->getKernel()->locateResource($filename);
diff --git a/src/Symfony/Bundle/TwigBundle/Controller/PreviewErrorController.php b/src/Symfony/Bundle/TwigBundle/Controller/PreviewErrorController.php
index bc15a968e9c15..27e0fde84dc45 100644
--- a/src/Symfony/Bundle/TwigBundle/Controller/PreviewErrorController.php
+++ b/src/Symfony/Bundle/TwigBundle/Controller/PreviewErrorController.php
@@ -37,7 +37,7 @@ public function __construct(HttpKernelInterface $kernel, $controller, ErrorRende
         $this->errorRenderer = $errorRenderer;
     }
 
-    public function previewErrorPageAction(Request $request, $code)
+    public function previewErrorPageAction(Request $request, int $code)
     {
         $exception = FlattenException::createFromThrowable(new \Exception('Something has intentionally gone wrong.'), $code, ['X-Debug' => false]);
 
diff --git a/src/Symfony/Bundle/TwigBundle/DependencyInjection/TwigExtension.php b/src/Symfony/Bundle/TwigBundle/DependencyInjection/TwigExtension.php
index 836f53267df21..a5cda2de5cd64 100644
--- a/src/Symfony/Bundle/TwigBundle/DependencyInjection/TwigExtension.php
+++ b/src/Symfony/Bundle/TwigBundle/DependencyInjection/TwigExtension.php
@@ -170,7 +170,7 @@ private function getBundleTemplatePaths(ContainerBuilder $container, array $conf
         return $bundleHierarchy;
     }
 
-    private function normalizeBundleName($name)
+    private function normalizeBundleName(string $name)
     {
         if ('Bundle' === substr($name, -6)) {
             $name = substr($name, 0, -6);
diff --git a/src/Symfony/Bundle/TwigBundle/composer.json b/src/Symfony/Bundle/TwigBundle/composer.json
index 387bc6f8143b4..f497406a022a7 100644
--- a/src/Symfony/Bundle/TwigBundle/composer.json
+++ b/src/Symfony/Bundle/TwigBundle/composer.json
@@ -19,9 +19,9 @@
         "php": "^7.2.9",
         "symfony/config": "^4.4|^5.0",
         "symfony/error-renderer": "^4.4|^5.0",
-        "symfony/twig-bridge": "^4.4|^5.0",
+        "symfony/twig-bridge": "^5.0",
         "symfony/http-foundation": "^4.4|^5.0",
-        "symfony/http-kernel": "^4.4|^5.0",
+        "symfony/http-kernel": "^5.0",
         "symfony/polyfill-ctype": "~1.8",
         "twig/twig": "^2.10"
     },