diff --git a/.github/workflows/backend-ci.yaml b/.github/workflows/backend-ci.yaml
index 7e874ab1..e115e14e 100644
--- a/.github/workflows/backend-ci.yaml
+++ b/.github/workflows/backend-ci.yaml
@@ -44,17 +44,14 @@ jobs:
         steps:
             - uses: actions/checkout@v7
 
-            - name: Setup PHP Action
-              uses: shivammathur/setup-php@v2
-              with:
-                  php-version: ${{ matrix.php }}
-                  coverage: none
-                  extensions: pdo_sqlite, gd
-                  tools: cs2pr
-
-            - uses: ramsey/composer-install@v3
+            - name: Install Composer dependencies
+              uses: ibexa/gh-workflows/actions/composer-install@main
               with:
-                  dependency-versions: highest
+                  gh-client-id: ${{ secrets.AUTOMATION_CLIENT_ID }}
+                  gh-client-secret: ${{ secrets.AUTOMATION_CLIENT_SECRET }}
+                  satis-network-key: ${{ secrets.SATIS_NETWORK_KEY }}
+                  satis-network-token: ${{ secrets.SATIS_NETWORK_TOKEN }}
+                  composer-options: "--prefer-dist --no-progress --no-suggest"
 
             - name: Run PHPStan analysis
               run: composer run-script phpstan
diff --git a/dependencies.json b/dependencies.json
new file mode 100644
index 00000000..75018be2
--- /dev/null
+++ b/dependencies.json
@@ -0,0 +1,11 @@
+{
+    "recipesEndpoint": "",
+    "packages": [
+        {
+            "requirement": "dev-ibx-12046-symfony-deprecations as 6.0.x-dev",
+            "repositoryUrl": "https://github.com/ibexa/core",
+            "package": "ibexa/core",
+            "shouldBeAddedAsVCS": false
+        }
+    ]
+}
diff --git a/src/bundle/Resources/config/services.yml b/src/bundle/Resources/config/services.yml
index 6176ebed..7108d2f5 100644
--- a/src/bundle/Resources/config/services.yml
+++ b/src/bundle/Resources/config/services.yml
@@ -63,7 +63,7 @@ services:
             - [setRequestStack, ["@request_stack"]]
 
     Ibexa\Rest\Server\Service\ExpressionRouterRootResourceBuilder:
-         arguments: ["@router", '@Ibexa\Bundle\Core\Routing\DefaultRouter', '@ibexa.config.resolver']
+         arguments: ["@router", '@ibexa.rest.templated_router', '@ibexa.config.resolver']
 
     Ibexa\Rest\Server\Controller:
         autowire: true
@@ -401,12 +401,29 @@ services:
         tags:
             - { name: ibexa.rest.input.handler, format: xml }
 
-    Ibexa\Bundle\Core\Routing\DefaultRouter:
-        class: Ibexa\Bundle\Core\Routing\DefaultRouter
+    # Templated (RFC 6570) URI router. It is wrapped in the SiteAccess-aware router decorator, like router.default.
+    ibexa.rest.templated_router.inner:
         parent: hautelook.router.template
         calls:
             - [ setOption, [ strict_requirements, ~ ] ]
 
+    ibexa.rest.templated_router:
+        class: Ibexa\Bundle\Core\Routing\DefaultRouter
+        arguments:
+            $innerRouter: '@ibexa.rest.templated_router.inner'
+            $siteAccessRouter: '@Ibexa\Core\MVC\Symfony\SiteAccess\Router'
+            $nonSiteAccessAwareRoutes: '%ibexa.default_router.non_site_access_aware_routes%'
+            $logger: '@?logger'
+
+    # BC alias: the templated router used to be registered under core's class name, which also captured
+    # autowiring of Ibexa\Bundle\Core\Routing\DefaultRouter. Inject ibexa.rest.templated_router explicitly instead.
+    Ibexa\Bundle\Core\Routing\DefaultRouter:
+        alias: ibexa.rest.templated_router
+        deprecated:
+            package: ibexa/rest
+            version: '6.0'
+            message: 'The "%alias_id%" service alias is deprecated, use "ibexa.rest.templated_router" instead.'
+
     Ibexa\Bundle\Rest\Routing\ExpressionLanguage\ContentTypeHeaderMatcherExpressionFunction:
         arguments:
             $mediaTypeParser: '@Ibexa\Contracts\Rest\Input\MediaTypeParserInterface'
diff --git a/src/bundle/Resources/config/value_object_visitors.yml b/src/bundle/Resources/config/value_object_visitors.yml
index 802bc84d..d36d3982 100644
--- a/src/bundle/Resources/config/value_object_visitors.yml
+++ b/src/bundle/Resources/config/value_object_visitors.yml
@@ -3,7 +3,7 @@ services:
         calls:
             - [ setUriParser, [ '@Ibexa\Contracts\Rest\UriParser\UriParserInterface' ] ]
             - [ setRouter, [ "@router" ] ]
-            - [ setTemplateRouter, [ '@Ibexa\Bundle\Core\Routing\DefaultRouter'] ]
+            - [ setTemplateRouter, [ '@ibexa.rest.templated_router' ] ]
 
     # Errors
     ibexa.rest.output.value_object_visitor.InvalidArgumentException: