diff --git a/.github/workflows/backend-ci.yaml b/.github/workflows/backend-ci.yaml
index b64a1f6e..7e874ab1 100644
--- a/.github/workflows/backend-ci.yaml
+++ b/.github/workflows/backend-ci.yaml
@@ -12,7 +12,7 @@ jobs:
         name: Run code style check
         runs-on: "ubuntu-24.04"
         steps:
-            - uses: actions/checkout@v6
+            - uses: actions/checkout@v7
 
             - name: Setup PHP Action
               uses: shivammathur/setup-php@v2
@@ -42,7 +42,7 @@ jobs:
                     - '8.4'
 
         steps:
-            - uses: actions/checkout@v6
+            - uses: actions/checkout@v7
 
             - name: Setup PHP Action
               uses: shivammathur/setup-php@v2
@@ -70,3 +70,4 @@ jobs:
     functional-tests:
         name: "REST functional tests"
         uses: ./.github/workflows/integration-tests-callable.yaml
+        secrets: inherit
diff --git a/.github/workflows/integration-tests-callable.yaml b/.github/workflows/integration-tests-callable.yaml
index 3651fa38..ea5feb8a 100644
--- a/.github/workflows/integration-tests-callable.yaml
+++ b/.github/workflows/integration-tests-callable.yaml
@@ -7,7 +7,7 @@ env:
     PHP_INI_ENV_memory_limit: 512M
     COMPOSER_CACHE_DIR: ~/.composer/cache
     PROJECT_EDITION: oss
-    SETUP: "doc/docker/base-dev.yml:doc/docker/selenium.yml"
+    SETUP: "doc/docker/base-dev.yml"
     WEB_HOST: web
 
 jobs:
@@ -22,27 +22,43 @@ jobs:
                     - '8.4'
 
         steps:
-            - uses: actions/checkout@v6
+            - uses: actions/checkout@v7
 
             - name: Set project version
               run: |
                 version=$(jq -r '.extra | ."branch-alias" | ."dev-main"' < composer.json)
                 echo "version=$version" >> $GITHUB_ENV
 
+            - name: Generate token
+              id: generate_token
+              uses: actions/create-github-app-token@v3
+              with:
+                  client-id: ${{ secrets.AUTOMATION_CLIENT_ID }}
+                  private-key: ${{ secrets.AUTOMATION_CLIENT_SECRET }}
+                  owner: ${{ github.repository_owner }}
+
             - name: Setup PHP Action
               uses: shivammathur/setup-php@v2
               with:
                   php-version: ${{ matrix.php }}
                   coverage: none
+                  github-token: ${{ steps.generate_token.outputs.token }}
 
             - name: Cache dependencies
-              uses: actions/cache@v4
+              uses: actions/cache@v6
               with:
                   path: ${{ env.COMPOSER_CACHE_DIR }}
                   key: "${{ env.PROJECT_EDITION }}-${{ env.version }}-${{ github.sha }}"
                   restore-keys: |
                     ${{ env.PROJECT_EDITION }}-${{ env.version }}
 
+            - name: Add composer key for GitHub App
+              if: ${{ steps.generate_token.outputs.token != '' }}
+              run: |
+                composer config github-oauth.github.com $GITHUB_TOKEN
+              env:
+                  GITHUB_TOKEN: ${{ steps.generate_token.outputs.token }}
+
             - name: Set up whole project using the tested dependency
               run: |
                 curl -L "https://raw.githubusercontent.com/ibexa/ci-scripts/main/bin/${{ env.version }}/prepare_project_edition.sh" > prepare_project_edition.sh
@@ -54,7 +70,20 @@ jobs:
                 cd "$HOME/build/project"
                 docker compose --env-file=.env exec -T --user www-data app sh -c "APP_ENV=behat php bin/console ibexa:behat:create-language 'pol-PL' 'Polish (polski)'"
 
-            - name: Run tests
+            - name: Configure composer inside vendor/ibexa/rest
+              run: |
+                cd "$HOME/build/project"
+                docker compose --env-file=.env exec -T --user www-data app sh -c "
+                    cd vendor/ibexa/rest &&
+                    curl -fsSLO https://raw.githubusercontent.com/ibexa/ci-scripts/main/bin/_common/configure_composer_audit_ignores.sh &&
+                    bash configure_composer_audit_ignores.sh &&
+                    composer update
+                "
+
+            - name: Run tests inside vendor/ibexa/rest against configured instance
               run: |
                 cd "$HOME/build/project"
-                docker compose --env-file=.env exec -T --user www-data app sh -c "cd vendor/ibexa/rest && composer update && composer test-functional"
+                docker compose --env-file=.env exec -T --user www-data -e EZP_TEST_REST_HOST=$WEB_HOST app sh -c "
+                    cd vendor/ibexa/rest &&
+                    composer test-functional
+                "