diff --git a/src/BootstrapAsset.php b/src/BootstrapAsset.php
index 2e59d22..76360be 100644
--- a/src/BootstrapAsset.php
+++ b/src/BootstrapAsset.php
@@ -9,7 +9,7 @@
 /**
  * Twitter Bootstrap 5 CSS bundle.
  */
-class BootstrapAsset extends AssetBundle
+final class BootstrapAsset extends AssetBundle
 {
     /**
      * @inheritDoc
@@ -20,9 +20,11 @@ public function init(): void
     {
         parent::init();
 
-        $assetBootstrap = YII_ENV === 'prod' ? 'bootstrap.min.css' : 'bootstrap.css';
+        $assetBootstrap = YII_ENV === 'prod'
+            ? ['bootstrap.min.css', 'bootstrap.min.css.map']
+            : ['bootstrap.css', 'bootstrap.css.map'];
 
-        $this->js[] = $assetBootstrap;
-        $this->publishOptions['only'] = [$assetBootstrap];
+        $this->css = $assetBootstrap;
+        $this->publishOptions['only'] = $assetBootstrap;
     }
 }
diff --git a/src/BootstrapPluginAsset.php b/src/BootstrapPluginAsset.php
index 973bd91..aa7b067 100644
--- a/src/BootstrapPluginAsset.php
+++ b/src/BootstrapPluginAsset.php
@@ -9,7 +9,7 @@
 /**
  * Twitter Bootstrap 5 JavaScript bundle.
  */
-class BootstrapPluginAsset extends AssetBundle
+final class BootstrapPluginAsset extends AssetBundle
 {
     /**
      * @inheritDoc
@@ -27,9 +27,11 @@ public function init(): void
     {
         parent::init();
 
-        $assetBootstrapPlugin = YII_ENV === 'prod' ? 'bootstrap.bundle.min.js' : 'bootstrap.bundle.js';
+        $assetBootstrapPlugin = YII_ENV === 'prod'
+            ? ['bootstrap.bundle.min.js', 'bootstrap.bundle.min.js.map']
+            : ['bootstrap.bundle.js', 'bootstrap.bundle.js.map'];
 
-        $this->js[] = $assetBootstrapPlugin;
-        $this->publishOptions['only'] = [$assetBootstrapPlugin];
+        $this->js = $assetBootstrapPlugin;
+        $this->publishOptions['only'] = $assetBootstrapPlugin;
     }
 }
diff --git a/tests/AssetTest.php b/tests/AssetTest.php
index ece90da..6c2a3d8 100644
--- a/tests/AssetTest.php
+++ b/tests/AssetTest.php
@@ -46,7 +46,8 @@ public function testBootstrapAssetRegister(): void
 
         $result = $view->renderFile(__DIR__ . '/support/main.php');
 
-        $this->assertMatchesRegularExpression('/bootstrap.css/', $result);
+        $this->assertStringContainsString('bootstrap.css', $result);
+        $this->assertStringContainsString('bootstrap.css.map', $result);
     }
 
     public function testBootstrapPluginAssetSimpleDependency(): void
@@ -86,8 +87,10 @@ public function testBootstrapPluginAssetRegister(): void
 
         $result = $view->renderFile(__DIR__ . '/support/main.php');
 
-        $this->assertMatchesRegularExpression('/bootstrap.css/', $result);
-        $this->assertMatchesRegularExpression('/bootstrap.bundle.js/', $result);
+        $this->assertStringContainsString('bootstrap.css', $result);
+        $this->assertStringContainsString('bootstrap.css.map', $result);
+        $this->assertStringContainsString('bootstrap.bundle.js', $result);
+        $this->assertStringContainsString('bootstrap.bundle.js.map', $result);
     }
 
     private function sourcesPublishVerifyFiles(string $type, object $bundle): void