diff --git a/composer.json b/composer.json
index 96029ebdee..cc65abb3ab 100644
--- a/composer.json
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diff --git a/composer.lock b/composer.lock
index 6de94331a8..af46020a71 100644
--- a/composer.lock
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@@ -133,24 +133,18 @@
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@@ -856,26 +850,26 @@
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@@ -10934,16 +10915,16 @@
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@@ -11732,16 +11713,16 @@
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@@ -12824,16 +12807,16 @@
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                 }
             ],
-            "time": "2024-04-23T20:25:34+00:00"
+            "time": "2024-05-22T21:24:41+00:00"
         },
         {
             "name": "symfony/browser-kit",
diff --git a/protected/humhub/assets/AppAsset.php b/protected/humhub/assets/AppAsset.php
index 2b0f112a6f..f414fa7f85 100755
--- a/protected/humhub/assets/AppAsset.php
+++ b/protected/humhub/assets/AppAsset.php
@@ -12,8 +12,8 @@ use humhub\components\assets\WebStaticAssetBundle;
 use humhub\modules\content\assets\ContentAsset;
 use humhub\modules\content\assets\ContentHighlightAsset;
 use humhub\modules\file\assets\FileAsset;
-use yii\bootstrap\BootstrapAsset;
-use yii\bootstrap\BootstrapPluginAsset;
+use yii\bootstrap5\BootstrapAsset;
+use yii\bootstrap5\BootstrapPluginAsset;
 use yii\jui\JuiAsset;
 use yii\validators\ValidationAsset;
 use yii\web\JqueryAsset;
diff --git a/protected/humhub/compat/bootstrap/Html.php b/protected/humhub/compat/bootstrap/Html.php
new file mode 100644
index 0000000000..22c4bdcc50
--- /dev/null
+++ b/protected/humhub/compat/bootstrap/Html.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace yii\bootstrap;
+class Html extends \yii\bootstrap5\Html
+{
+
+}
diff --git a/protected/humhub/config/common.php b/protected/humhub/config/common.php
index 2feeaa1be8..a1c04a32ba 100644
--- a/protected/humhub/config/common.php
+++ b/protected/humhub/config/common.php
@@ -19,6 +19,10 @@ Yii::$classMap['Zend\Stdlib\ArrayObject'] = '@humhub/compat/ArrayObject.php';
 Yii::$classMap['humhub\modules\search\interfaces\Searchable'] = '@humhub/compat/search/Searchable.php';
 Yii::$classMap['humhub\modules\search\events\SearchAddEvent'] = '@humhub/compat/search/SearchAddEvent.php';
 
+// Bootstrap 5 Migration
+Yii::$classMap['yii\bootstrap\Html'] = '@humhub/compat/bootstrap/Html.php';
+
+
 // Workaround: If OpenSSL extension is not available (#3852)
 if (!defined('PKCS7_DETACHED')) {
     define('PKCS7_DETACHED', 64);