diff --git a/Classes/Dashboard/Widgets/PageViewsBar.php b/Classes/Dashboard/Widgets/PageViewsBar.php
index 1755b89..b98ac75 100644
--- a/Classes/Dashboard/Widgets/PageViewsBar.php
+++ b/Classes/Dashboard/Widgets/PageViewsBar.php
@@ -22,8 +22,7 @@ namespace DanielSiepmann\Tracking\Dashboard\Widgets;
  */
 
 use TYPO3\CMS\Core\Database\Connection;
-use TYPO3\CMS\Core\Database\ConnectionPool;
-use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Core\Database\Query\QueryBuilder;
 use TYPO3\CMS\Dashboard\Widgets\AbstractBarChartWidget;
 
 class PageViewsBar extends AbstractBarChartWidget
@@ -36,6 +35,18 @@ class PageViewsBar extends AbstractBarChartWidget
 
     protected $height = 4;
 
+    /**
+     * @var QueryBuilder
+     */
+    protected $queryBuilder;
+
+    public function __construct(string $identifier, QueryBuilder $queryBuilder)
+    {
+        parent::__construct($identifier);
+        $this->queryBuilder = $queryBuilder;
+        $this->identifier = $identifier;
+    }
+
     protected function prepareChartData(): void
     {
         list($labels, $data) = $this->calculateDataForLastDays(31);
@@ -57,18 +68,15 @@ class PageViewsBar extends AbstractBarChartWidget
 
     protected function getPageViewsInPeriod(int $start, int $end): int
     {
-        $queryBuilder = GeneralUtility::makeInstance(ConnectionPool::class)
-            ->getQueryBuilderForTable('tx_tracking_pageview');
-
-        return (int)$queryBuilder
+        return (int)$this->queryBuilder
             ->count('*')
             ->from('tx_tracking_pageview')
             ->where(
-                $queryBuilder->expr()->gte('tstamp', $start),
-                $queryBuilder->expr()->lte('tstamp', $end),
-                $queryBuilder->expr()->notIn(
+                $this->queryBuilder->expr()->gte('tstamp', $start),
+                $this->queryBuilder->expr()->lte('tstamp', $end),
+                $this->queryBuilder->expr()->notIn(
                     'tx_tracking_pageview.pid',
-                    $queryBuilder->createNamedParameter([
+                    $this->queryBuilder->createNamedParameter([
                         1,
                         11,
                         38,
diff --git a/Classes/Dashboard/Widgets/PageViewsPerPageDoughnut.php b/Classes/Dashboard/Widgets/PageViewsPerPageDoughnut.php
index a3d5e84..54776e3 100644
--- a/Classes/Dashboard/Widgets/PageViewsPerPageDoughnut.php
+++ b/Classes/Dashboard/Widgets/PageViewsPerPageDoughnut.php
@@ -23,9 +23,7 @@ namespace DanielSiepmann\Tracking\Dashboard\Widgets;
 
 use Doctrine\DBAL\ParameterType;
 use TYPO3\CMS\Core\Database\Connection;
-use TYPO3\CMS\Core\Database\ConnectionPool;
 use TYPO3\CMS\Core\Database\Query\QueryBuilder;
-use TYPO3\CMS\Core\Utility\GeneralUtility;
 use TYPO3\CMS\Dashboard\Widgets\AbstractDoughnutChartWidget;
 
 class PageViewsPerPageDoughnut extends AbstractDoughnutChartWidget
@@ -34,6 +32,17 @@ class PageViewsPerPageDoughnut extends AbstractDoughnutChartWidget
 
     protected $description = 'LLL:EXT:tracking/Resources/Private/Language/locallang.xlf:dashboard.widgets.pageViewsPerPageDoughnut.description';
 
+    /**
+     * @var QueryBuilder
+     */
+    protected $queryBuilder;
+
+    public function __construct(string $identifier, QueryBuilder $queryBuilder)
+    {
+        parent::__construct($identifier);
+        $this->queryBuilder = $queryBuilder;
+    }
+
     protected function prepareChartData(): void
     {
         list($labels, $data) = $this->getPageViewsPerPage(31);
@@ -53,9 +62,8 @@ class PageViewsPerPageDoughnut extends AbstractDoughnutChartWidget
     {
         $labels = [];
         $data = [];
-        $queryBuilder = $this->getQueryBuilder();
 
-        $result = $queryBuilder
+        $result = $this->queryBuilder
             ->selectLiteral('count(tx_tracking_pageview.pid) as total')
             ->addSelect('pages.title', 'pages.uid')
             ->from('tx_tracking_pageview')
@@ -63,12 +71,15 @@ class PageViewsPerPageDoughnut extends AbstractDoughnutChartWidget
                 'tx_tracking_pageview',
                 'pages',
                 'pages',
-                $queryBuilder->expr()->eq('tx_tracking_pageview.pid', $queryBuilder->quoteIdentifier('pages.uid'))
+                $this->queryBuilder->expr()->eq(
+                    'tx_tracking_pageview.pid',
+                    $this->queryBuilder->quoteIdentifier('pages.uid')
+                )
             )
             ->where(
-                $queryBuilder->expr()->notIn(
+                $this->queryBuilder->expr()->notIn(
                     'tx_tracking_pageview.pid',
-                    $queryBuilder->createNamedParameter([
+                    $this->queryBuilder->createNamedParameter([
                         1,
                         11,
                         38,
@@ -91,9 +102,4 @@ class PageViewsPerPageDoughnut extends AbstractDoughnutChartWidget
             $data,
         ];
     }
-
-    private function getQueryBuilder(): QueryBuilder
-    {
-        return GeneralUtility::makeInstance(ConnectionPool::class)->getQueryBuilderForTable('tx_tracking_pageview');
-    }
 }
diff --git a/Configuration/Services.yaml b/Configuration/Services.yaml
index af77272..0d66960 100644
--- a/Configuration/Services.yaml
+++ b/Configuration/Services.yaml
@@ -7,17 +7,27 @@ services:
   DanielSiepmann\Tracking\:
     resource: '../Classes/*'
 
-  DanielSiepmann\DI\DatabaseConnection\Pageview:
+  # Virtual services
+
+  DanielSiepmann\Tracking\DI\DatabaseConnection\Pageview:
     factory:
       - '@TYPO3\CMS\Core\Database\ConnectionPool'
       - 'getConnectionForTable'
     arguments:
       - 'tx_tracking_pageview'
+  DanielSiepmann\Tracking\DI\QueryBuilder\PageView:
+    factory:
+      - '@TYPO3\CMS\Core\Database\ConnectionPool'
+      - 'getQueryBuilderForTable'
+    arguments:
+      - 'tx_tracking_pageview'
+
+  # Existing classes
 
   DanielSiepmann\Tracking\Domain\Repository\Pageview:
     public: true
     arguments:
-      - '@DanielSiepmann\DI\DatabaseConnection\Pageview'
+      - '@DanielSiepmann\Tracking\DI\DatabaseConnection\Pageview'
 
   DanielSiepmann\Tracking\Middleware\Pageview:
     public: true
@@ -30,17 +40,21 @@ services:
   # Dashboard Widgets
 
   DanielSiepmann\Tracking\Dashboard\Widgets\PageViewsBar:
-    class: DanielSiepmann\Tracking\Dashboard\Widgets\PageViewsBar
-    arguments: [pageViewsBar]
+    class: 'DanielSiepmann\Tracking\Dashboard\Widgets\PageViewsBar'
+    arguments:
+      - 'pageViewsBar'
+      - '@DanielSiepmann\Tracking\DI\QueryBuilder\PageView'
     tags:
-      - name: dashboard.widget
-        identifier: pageViewsBar
-        widgetGroups: tracking
+      - name: 'dashboard.widget'
+        identifier: 'pageViewsBar'
+        widgetGroups: 'tracking'
 
   DanielSiepmann\Tracking\Dashboard\Widgets\PageViewsPerPageDoughnut:
-    class: DanielSiepmann\Tracking\Dashboard\Widgets\PageViewsPerPageDoughnut
-    arguments: [pageViewsPerPageDoughnut]
+    class: 'DanielSiepmann\Tracking\Dashboard\Widgets\PageViewsPerPageDoughnut'
+    arguments:
+      - 'pageViewsPerPageDoughnut'
+      - '@DanielSiepmann\Tracking\DI\QueryBuilder\PageView'
     tags:
-      - name: dashboard.widget
-        identifier: pageViewsPerPageDoughnut
-        widgetGroups: tracking
+      - name: 'dashboard.widget'
+        identifier: 'pageViewsPerPageDoughnut'
+        widgetGroups: 'tracking'
diff --git a/readme.rst b/readme.rst
new file mode 100644
index 0000000..a30f73b
--- /dev/null
+++ b/readme.rst
@@ -0,0 +1,23 @@
+Todos
+=====
+
+#. Add command that will iterate over all DB entries and remove ones matching the black list rule.
+   E.g. if rule is adjusted in meanwhile.
+
+#. Add further widgets.
+
+   #. Top 404 requests (Collect them to show them).
+
+   #. Grouped by user agents.
+
+#. Move bot detection to another rule.
+
+   #. Keep indexing those requests, but mark them as bot and separate them in widgets.
+
+   #. Provide an overview of crawls as widgets. E.g. to allow fine grained robots.txt.
+
+#. Add information to Admin Panel.
+
+#. Add operating System
+
+   #. Another Symfony Expression which returns the OS ("Ubuntu", "Macintosh", "Android", "iPhone", "Windows")