diff --git a/.github/workflows/codeception.yml b/.github/workflows/codeception.yml
index 0b501ee..07f68e8 100644
--- a/.github/workflows/codeception.yml
+++ b/.github/workflows/codeception.yml
@@ -40,12 +40,13 @@ jobs:
             matrix:
                 php: [ 8.2 ]
                 symfony: [ ^6.2 ]
-                pimcore: [ ~11.0.0 ]
+                pimcore: [ ~11.2.0 ]
                 include:
-                    -   pimcore: ~11.0.0
+                    -   pimcore: ~11.2.0
                         template_tag: v11.0.0
         steps:
-            -   uses: actions/checkout@v2
+            -   uses: nanasess/setup-chromedriver@v2
+            -   uses: actions/checkout@v4
                 with:
                     path: lib/test-bundle
 
@@ -98,9 +99,11 @@ jobs:
 
             -   name: Setup Chromium
                 run: |
-                    nohup $CHROMEWEBDRIVER/chromedriver --url-base=/wd/hub /dev/null 2>&1 &
+                    export DISPLAY=:99
+                    chromedriver --url-base=/wd/hub --port=9515 &
+                    sudo Xvfb -ac :99 -screen 0 1280x1024x24 > /dev/null 2>&1 &
 
-            -   name: Start Webserver and Chrome
+            -   name: Start Symfony Server
                 run: |
                     curl -sS https://get.symfony.com/cli/installer | bash -s -- --install-dir=$HOME/.symfony/bin
                     ~/.symfony/bin/symfony server:start --port=8080 --dir=public --allow-http --no-tls --daemon
@@ -108,10 +111,10 @@ jobs:
             -   name: Get Composer Cache Directory
                 id: composer-cache
                 run: |
-                    echo "::set-output name=dir::$(composer config cache-files-dir)"
+                    echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
 
             -   name: Cache Composer Downloads
-                uses: actions/cache@v1
+                uses: actions/cache@v4
                 with:
                     path: ${{ steps.composer-cache.outputs.dir }}
                     key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
@@ -136,7 +139,7 @@ jobs:
                     vendor/bin/codecept run --env github -c ${{ github.workspace }}/lib/test-bundle
 
             -   name: Log Output
-                uses: actions/upload-artifact@v2
+                uses: actions/upload-artifact@v4
                 if: failure()
                 with:
                     name: "Logs (PHP ${{ matrix.php }}, Pimcore ${{ matrix.pimcore }}, Symfony ${{ matrix.symfony }})"
diff --git a/README.md b/README.md
index c0da600..49ba98b 100644
--- a/README.md
+++ b/README.md
@@ -98,8 +98,10 @@ $ bin/console dynamic-search:run -v
         - Multi Search Channels
     - Filter (Faceted Search / Aggregation)
         - Create Filter Definition
+- [Backend UI](docs/50_BackendUI.md)
 - API
 
+
 ## Copyright and License
 Copyright: [DACHCOM.DIGITAL](http://dachcom-digital.com)
 For licensing details please visit [LICENSE.md](LICENSE.md)
diff --git a/UPGRADE.md b/UPGRADE.md
index 3b338e9..a70dc47 100644
--- a/UPGRADE.md
+++ b/UPGRADE.md
@@ -1,5 +1,9 @@
 # Upgrade Notes
 
+# 4.0.2
+
+* introduced backend ui event [#91](https://github.com/dachcom-digital/pimcore-dynamic-search/pull/91)
+
 # 4.0.1
 
 * fix resource deletion [#90](https://github.com/dachcom-digital/pimcore-dynamic-search/pull/90)
diff --git a/config/pimcore/routing.yaml b/config/pimcore/routing.yaml
index 27105a2..8ac4169 100644
--- a/config/pimcore/routing.yaml
+++ b/config/pimcore/routing.yaml
@@ -1,10 +1,15 @@
 dynamic_search.controller.admin.get_state:
     path: /admin/dynamic-search/settings/health-state
     defaults: { _controller: DynamicSearchBundle\Controller\Admin\SettingsController::healthStateAction }
+    options:
+        expose: true
+
 dynamic_search.controller.admin.get_provider:
     path: /admin/dynamic-search/settings/provider
     defaults: { _controller: DynamicSearchBundle\Controller\Admin\SettingsController::providerAction }
+    options:
+        expose: true
 
 dynamic_search.controller.json_search:
     path: /dynamic-search/{contextName}/j-{outputChannelName}
-    defaults: { _controller: DynamicSearchBundle\Controller\SearchController::jsonSearchAction }
\ No newline at end of file
+    defaults: { _controller: DynamicSearchBundle\Controller\SearchController::jsonSearchAction }
diff --git a/docs/50_BackendUI.md b/docs/50_BackendUI.md
new file mode 100644
index 0000000..749ef3d
--- /dev/null
+++ b/docs/50_BackendUI.md
@@ -0,0 +1,19 @@
+# Backend UI
+
+It is possible to extend the backend user interface.
+Listen to the event `dynamic_search.event.settings.postBuildLayout`:
+
+```javascript
+document.addEventListener(
+    'dynamic_search.event.settings.postBuildLayout',
+    (event) => {
+        const dsSettings = event.detail.subject;
+
+        dsSettings.panel.add({
+            'xtype': 'button',
+            'text': 'my button'
+            // ...etc
+        });
+    }
+);
+```
diff --git a/public/js/backend/settings.js b/public/js/backend/settings.js
index dff8716..1c781f0 100644
--- a/public/js/backend/settings.js
+++ b/public/js/backend/settings.js
@@ -20,16 +20,29 @@ pimcore.plugin.dynamicSearch.settings = Class.create({
             title: t('dynamic_search_settings'),
             iconCls: 'dynamic_search_bundle',
             border: false,
-            layout: 'border',
+            bodyPadding: 10,
+            layout: {
+                type: 'vbox',
+                align: 'stretch'
+            },
             closable: true,
+            items: [
+                this.buildStatusPanel(),
+                this.buildProviderGrid()
+            ]
         });
 
         this.panel.on('destroy', function () {
             pimcore.globalmanager.remove('dynamic_search_settings');
         }.bind(this));
 
-        this.panel.add(this.buildStatusPanel())
-        this.panel.add(this.buildProviderGrid())
+        const postBuildLayoutEvent = new CustomEvent('dynamic_search.event.settings.postBuildLayout', {
+            detail: {
+                subject: this
+            }
+        });
+
+        document.dispatchEvent(postBuildLayoutEvent);
 
         pimcoreSystemPanel.add(this.panel);
         pimcoreSystemPanel.setActiveItem('dynamic_search_settings');
@@ -41,8 +54,7 @@ pimcore.plugin.dynamicSearch.settings = Class.create({
             title: 'Health Status',
             layout: 'table',
             viewType: 'tableview',
-            region: 'north',
-            style: 'padding: 10px',
+            style: 'margin-bottom: 10px',
             border: false,
             columnLines: true,
             stripeRows: true,
@@ -56,7 +68,7 @@ pimcore.plugin.dynamicSearch.settings = Class.create({
                 autoLoad: true,
                 proxy: {
                     type: 'ajax',
-                    url: '/admin/dynamic-search/settings/health-state',
+                    url: Routing.generate('dynamic_search.controller.admin.get_state'),
                     reader: {
                         type: 'json',
                         rootProperty: 'lines'
@@ -109,9 +121,8 @@ pimcore.plugin.dynamicSearch.settings = Class.create({
 
         return new Ext.grid.GridPanel({
             title: 'Provider',
-            layout: 'fit',
-            region: 'center',
-            style: 'padding: 10px',
+            layout: 'table',
+            style: 'margin-bottom: 10px',
             columnLines: true,
             stripeRows: true,
             disableSelection: true,
@@ -123,7 +134,7 @@ pimcore.plugin.dynamicSearch.settings = Class.create({
                 autoLoad: true,
                 proxy: {
                     type: 'ajax',
-                    url: '/admin/dynamic-search/settings/provider',
+                    url: Routing.generate('dynamic_search.controller.admin.get_provider'),
                     reader: {
                         type: 'json',
                         rootProperty: 'provider'
diff --git a/tests/_envs/github.yml b/tests/_envs/github.yml
index efc6673..bba7660 100644
--- a/tests/_envs/github.yml
+++ b/tests/_envs/github.yml
@@ -1,12 +1,13 @@
 modules:
     config:
-        \Dachcom\Codeception\Helper\Browser\WebDriver:
+        \Dachcom\Codeception\Support\Helper\Browser\WebDriver:
             browser: chrome
             port: 9515
             restart: true
             wait: 1
+            window_size: 1280x1024
             capabilities:
-                chromeOptions:
-                    args: ['--no-sandbox', '--disable-extensions', '--headless', '--disable-gpu', '--disable-dev-shm-usage', '--window-size=1024,768']
+                'goog:chromeOptions':
+                    args: ['--no-sandbox', '--disable-extensions', '--headless', '--disable-gpu', '--disable-dev-shm-usage', '--window-size=1280,1024']
                     prefs:
-                        download.default_directory: '%TEST_BUNDLE_TEST_DIR%/_data/downloads'
\ No newline at end of file
+                        download.default_directory: '%TEST_BUNDLE_TEST_DIR%/_data/downloads'