diff --git a/src/Chart.php b/src/Chart.php
index b24be01..2264333 100644
--- a/src/Chart.php
+++ b/src/Chart.php
@@ -53,6 +53,7 @@ class Chart extends View
     /** @var ColorGenerator */
     public $colorGenerator;
 
+    #[\Override]
     protected function init(): void
     {
         parent::init();
@@ -62,6 +63,7 @@ protected function init(): void
         $this->getApp()->requireJs($this->getApp()->cdn['chart.js'] . '/chart.min.js');
     }
 
+    #[\Override]
     public function renderView(): void
     {
         $this->js(true, new JsExpression('new Chart([], []);', [$this->name, $this->getConfig()]));
diff --git a/src/ChartBox.php b/src/ChartBox.php
index 3fa0b06..e3fa6a2 100644
--- a/src/ChartBox.php
+++ b/src/ChartBox.php
@@ -17,6 +17,7 @@ class ChartBox extends View
     /** @var string */
     public $label = 'Chart Box';
 
+    #[\Override]
     protected function init(): void
     {
         $this->defaultTemplate = dirname(__DIR__) . '/template/chartbox.html';
diff --git a/src/PieChart.php b/src/PieChart.php
index 9741b64..2fa9e16 100644
--- a/src/PieChart.php
+++ b/src/PieChart.php
@@ -11,6 +11,7 @@ class PieChart extends Chart
 {
     public string $type = self::TYPE_PIE;
 
+    #[\Override]
     public function prepareDatasets(): void
     {
         $datasets = [];
@@ -51,6 +52,7 @@ public function prepareDatasets(): void
         $this->setDatasets($datasets);
     }
 
+    #[\Override]
     public function setCurrencyLabel(string $char = '€', string $axis = 'y', int $digits = 2)
     {
         $options = [
diff --git a/src/ScatterChart.php b/src/ScatterChart.php
index 04b1647..a0016d2 100644
--- a/src/ScatterChart.php
+++ b/src/ScatterChart.php
@@ -20,6 +20,7 @@ class ScatterChart extends Chart
     /** @var string R (radius) field name */
     protected $rField;
 
+    #[\Override]
     public function prepareDatasets(): void
     {
         $columns = $this->columns;