diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index 456f292..abd783d 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -14,5 +14,6 @@ jobs:
     with:
       PHP_EXTENSIONS: "mbstring"
       SYMFONY_KERNEL: "Nucleos\\AllInklBundle\\Tests\\App\\AppKernel"
+      SYMFONY_VERSIONS: "6.4,7.0"
     secrets:
       CODECOV_TOKEN: "${{ secrets.CODECOV_TOKEN }}"
diff --git a/composer.json b/composer.json
index d9f3797..bda150c 100644
--- a/composer.json
+++ b/composer.json
@@ -45,27 +45,27 @@
         "sonata-project/block-bundle": "^4.21 || ^5.0",
         "sonata-project/doctrine-extensions": "^1.1 || ^2.0",
         "sonata-project/form-extensions": "^1.19 || ^2.0",
-        "symfony/config": "^5.4 || ^6.2",
-        "symfony/console": "^5.4 || ^6.2",
-        "symfony/dependency-injection": "^5.4 || ^6.2",
-        "symfony/expression-language": "^5.4 || ^6.2",
-        "symfony/form": "^5.4 || ^6.2",
-        "symfony/framework-bundle": "^5.4.19 || ^6.2.5",
-        "symfony/http-foundation": "^5.4 || ^6.2",
-        "symfony/http-kernel": "^5.4 || ^6.2",
-        "symfony/mailer": "^5.4 || ^6.2",
-        "symfony/mime": "^5.4 || ^6.2",
-        "symfony/options-resolver": "^5.4 || ^6.2",
+        "symfony/config": "^6.4 || ^7.0",
+        "symfony/console": "^6.4 || ^7.0",
+        "symfony/dependency-injection": "^6.4 || ^7.0",
+        "symfony/expression-language": "^6.4 || ^7.0",
+        "symfony/form": "^6.4 || ^7.0",
+        "symfony/framework-bundle": "^6.4 || ^7.0",
+        "symfony/http-foundation": "^6.4 || ^7.0",
+        "symfony/http-kernel": "^6.4 || ^7.0",
+        "symfony/mailer": "^6.4 || ^7.0",
+        "symfony/mime": "^6.4 || ^7.0",
+        "symfony/options-resolver": "^6.4 || ^7.0",
         "symfony/translation-contracts": "^1.1 || ^2.0 || ^3.0",
-        "symfony/twig-bridge": "^5.4 || ^6.2",
+        "symfony/twig-bridge": "^6.4 || ^7.0",
         "twig/intl-extra": "^2.4 || ^3.0",
         "twig/twig": "^2.4 || ^3.0"
     },
     "require-dev": {
         "ergebnis/composer-normalize": "^2.0.1",
-        "symfony/browser-kit": "^5.4 || ^6.2",
-        "symfony/translation": "^5.4 || ^6.2",
-        "symfony/yaml": "^5.4 || ^6.2"
+        "symfony/browser-kit": "^6.4 || ^7.0",
+        "symfony/translation": "^6.4 || ^7.0",
+        "symfony/yaml": "^6.4 || ^7.0"
     },
     "autoload": {
         "psr-4": {
diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
index 5c23020..63fd4a8 100644
--- a/phpstan-baseline.neon
+++ b/phpstan-baseline.neon
@@ -20,6 +20,11 @@ parameters:
 			count: 1
 			path: src/Mailer/SymfonyMailer.php
 
+		-
+			message: "#^Method Nucleos\\\\AllInklBundle\\\\NucleosAllInklBundle\\:\\:getContainerExtension\\(\\) should return Symfony\\\\Component\\\\DependencyInjection\\\\Extension\\\\ExtensionInterface\\|null but returns Symfony\\\\Component\\\\DependencyInjection\\\\Extension\\\\ExtensionInterface\\|false\\.$#"
+			count: 1
+			path: src/NucleosAllInklBundle.php
+
 		-
 			message: "#^Method Nucleos\\\\AllInklBundle\\\\Service\\\\AbstractService\\:\\:call\\(\\) has parameter \\$parameter with no value type specified in iterable type array\\.$#"
 			count: 1
diff --git a/psalm-baseline.xml b/psalm-baseline.xml
index b6ecfe8..980dc36 100644
--- a/psalm-baseline.xml
+++ b/psalm-baseline.xml
@@ -15,4 +15,9 @@
       <code>fixXmlConfig</code>
     </UndefinedMethod>
   </file>
+  <file src="src/NucleosAllInklBundle.php">
+    <FalsableReturnStatement>
+      <code><![CDATA[$this->extension]]></code>
+    </FalsableReturnStatement>
+  </file>
 </files>