diff --git a/composer.json b/composer.json
index ffff2f9..40d4601 100644
--- a/composer.json
+++ b/composer.json
@@ -12,13 +12,11 @@
     ],
     "require": {
         "php": ">= 8.1",
-        "ext-filter": "*",
-        "ext-simplexml": "*",
         "ecphp/cas-lib": "^3",
         "loophp/psr-http-message-bridge-bundle": "^1.0",
         "psr/http-client": "^1.0",
-        "psr/http-message": "^1.0",
-        "symfony/framework-bundle": "^6.1 || ^7.0"
+        "psr/http-message": "^1.0 || ^2.0",
+        "symfony/framework-bundle": "^6.4 || ^7"
     },
     "require-dev": {
         "ext-pcov": "*",
@@ -31,12 +29,12 @@
         "nyholm/psr7": "^1.8",
         "phpspec/phpspec": "^7",
         "phpstan/phpstan-symfony": "^1.1",
-        "symfony/cache": "^6.1 || ^7.0",
-        "symfony/dependency-injection": "^6.1 || ^7.0",
-        "symfony/http-client": "^6.1 || ^7.0",
-        "symfony/routing": "^6.1 || ^7.0",
-        "symfony/security-bundle": "^6.1 || ^7.0",
-        "veewee/xml": "^2.6"
+        "symfony/cache": "^6.4 || ^7",
+        "symfony/dependency-injection": "^6.4 || ^7",
+        "symfony/http-client": "^6.4 || ^7",
+        "symfony/routing": "^6.4 || ^7",
+        "symfony/security-bundle": "^6.4 || ^7",
+        "veewee/xml": "^2.6 || ^3"
     },
     "suggest": {
         "loophp/unaltered-psr-http-message-bridge-bundle": "A drop-in replacement for symfony/psr-http-message-bridge, that does not alter query parameters.",
diff --git a/src/Security/CasAuthenticator.php b/src/Security/CasAuthenticator.php
index a96e695..bbf1983 100644
--- a/src/Security/CasAuthenticator.php
+++ b/src/Security/CasAuthenticator.php
@@ -30,6 +30,8 @@
 use Symfony\Component\Security\Http\EntryPoint\AuthenticationEntryPointInterface;
 use Throwable;
 
+use function sprintf;
+
 final class CasAuthenticator extends AbstractAuthenticator implements AuthenticationEntryPointInterface
 {
     public function __construct(
diff --git a/src/Security/Core/User/CasUserProvider.php b/src/Security/Core/User/CasUserProvider.php
index 20b433a..fdeaf7d 100644
--- a/src/Security/Core/User/CasUserProvider.php
+++ b/src/Security/Core/User/CasUserProvider.php
@@ -21,6 +21,8 @@
 use Symfony\Component\Security\Core\User\UserInterface;
 use Throwable;
 
+use function sprintf;
+
 final class CasUserProvider implements CasUserProviderInterface
 {
     public function __construct(
@@ -28,7 +30,7 @@ public function __construct(
         private readonly HttpMessageFactoryInterface $httpMessageFactory
     ) {}
 
-    public function loadUserByIdentifier($identifier): UserInterface
+    public function loadUserByIdentifier(string $identifier): UserInterface
     {
         throw new UnsupportedUserException('Unsupported operation.');
     }
diff --git a/src/Security/Core/User/CasUserProviderInterface.php b/src/Security/Core/User/CasUserProviderInterface.php
index 8698257..f585d54 100644
--- a/src/Security/Core/User/CasUserProviderInterface.php
+++ b/src/Security/Core/User/CasUserProviderInterface.php
@@ -14,6 +14,9 @@
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\Security\Core\User\UserProviderInterface;
 
+/**
+ * @template-extends UserProviderInterface<CasUserInterface>
+ */
 interface CasUserProviderInterface extends UserProviderInterface
 {
     public function loadUserByResponse(Response $response): CasUserInterface;