diff --git a/composer.json b/composer.json
index 576e024220..b770520223 100644
--- a/composer.json
+++ b/composer.json
@@ -4,66 +4,63 @@
     "license": "(GPL-2.0-only or proprietary)",
     "description": "A meta package for installing Ibexa Open Source",
     "require": {
-        "php": "^7.4 || ^8.0",
+        "php": ">=8.3",
         "ext-ctype": "*",
         "ext-iconv": "*",
         "doctrine/doctrine-migrations-bundle": "^3.0",
-        "ibexa/doctrine-schema": "~5.0.x-dev",
-        "ibexa/system-info": "~5.0.x-dev",
-        "ibexa/admin-ui": "~5.0.x-dev",
-        "ibexa/admin-ui-assets": "~5.0.0@alpha",
-        "ibexa/content-forms": "~5.0.x-dev",
-        "ibexa/core": "~5.0.x-dev",
-        "ibexa/core-persistence": "~5.0.x-dev",
-        "ibexa/core-search": "~5.0.x-dev",
-        "ibexa/cron": "~5.0.x-dev",
-        "ibexa/design-engine": "~5.0.x-dev",
-        "ibexa/fieldtype-matrix": "~5.0.x-dev",
-        "ibexa/fieldtype-query": "~5.0.x-dev",
-        "ibexa/fieldtype-richtext": "~5.0.x-dev",
-        "ibexa/graphql": "~5.0.x-dev",
-        "ibexa/http-cache": "~5.0.x-dev",
-        "ibexa/i18n": "~5.0.x-dev",
-        "ibexa/notifications": "~5.0.x-dev",
-        "ibexa/post-install": "~5.0.x-dev",
-        "ibexa/rest": "~5.0.x-dev",
-        "ibexa/search": "~5.0.x-dev",
-        "ibexa/solr": "~5.0.x-dev",
-        "ibexa/standard-design": "~5.0.x-dev",
-        "ibexa/user": "~5.0.x-dev",
-        "symfony/asset": "^5.3.0",
-        "symfony/cache": "^5.3.0",
-        "symfony/console": "^5.3.0",
-        "symfony/dotenv": "^5.3.0",
-        "symfony/expression-language": "^5.3.0",
-        "symfony/flex": "^1.11 || ^2",
-        "symfony/form": "^5.3.0",
-        "symfony/framework-bundle": "^5.3.0",
+        "ibexa/doctrine-schema": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "ibexa/system-info": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "ibexa/admin-ui": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "ibexa/admin-ui-assets": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "ibexa/content-forms": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "ibexa/core": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "ibexa/core-persistence": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "ibexa/core-search": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "ibexa/cron": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "ibexa/design-engine": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "ibexa/fieldtype-matrix": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "ibexa/fieldtype-query": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "ibexa/fieldtype-richtext": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "ibexa/graphql": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "ibexa/http-cache": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "ibexa/i18n": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "ibexa/notifications": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "ibexa/post-install": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "ibexa/rest": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "ibexa/search": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "ibexa/solr": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "ibexa/standard-design": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "ibexa/user": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "symfony/asset": "^6.4",
+        "symfony/cache": "^6.4",
+        "symfony/console": "^6.4",
+        "symfony/dotenv": "^6.4",
+        "symfony/expression-language": "^6.4",
+        "symfony/flex": "^2",
+        "symfony/form": "^6.4",
+        "symfony/framework-bundle": "^6.4",
         "symfony/monolog-bundle": "^3.6.0",
-        "symfony/process": "^5.3.0",
-        "symfony/proxy-manager-bridge": "^5.3.0",
-        "symfony/security-bundle": "^5.3.0",
-        "symfony/property-access": "^5.3.0",
-        "symfony/property-info": "^5.3.0",
-        "symfony/serializer": "^5.3.0",
-        "symfony/translation": "^5.3.0",
-        "symfony/twig-bundle": "^5.3.0",
-        "symfony/validator": "^5.3.0",
-        "symfony/web-link": "^5.3.0",
+        "symfony/process": "^6.4",
+        "symfony/proxy-manager-bridge": "^6.4.0",
+        "symfony/security-bundle": "^6.4.0",
+        "symfony/serializer-pack": "^1.0",
+        "symfony/translation": "^6.4.0",
+        "symfony/twig-bundle": "^6.4.0",
+        "symfony/validator": "^6.4",
+        "symfony/web-link": "^6.4",
         "symfony/webpack-encore-bundle": "^1.8",
-        "symfony/yaml": "^5.3.0",
-        "friendsofsymfony/jsrouting-bundle": "^2.7.0",
+        "symfony/yaml": "^6.4",
+        "friendsofsymfony/jsrouting-bundle": "^3.5.0",
         "knplabs/knp-menu-bundle": "^3.1",
         "lexik/jwt-authentication-bundle": "^2.10.5",
         "monolog/monolog": "^2.2",
-        "overblog/graphiql-bundle": "^0.2.1",
+        "overblog/graphiql-bundle": "^0.3",
         "platformsh/symfonyflex-bridge": "^2.4",
-        "sensio/framework-extra-bundle": "^6.1.0",
         "twig/extra-bundle": "^3.1.1",
         "doctrine/doctrine-bundle": "^2.4.2"
     },
     "require-dev": {
-        "ibexa/ci-scripts": "^0.2@dev"
+        "ibexa/ci-scripts": "dev-ibx-8470-symfony-6 as 5.0.x-dev"
     },
     "conflict": {
         "doctrine/doctrine-bundle": "2.6.3",