diff --git a/js/src/common/Application.js b/js/src/common/Application.js
index 65592ad08..bc581cbe0 100644
--- a/js/src/common/Application.js
+++ b/js/src/common/Application.js
@@ -168,7 +168,9 @@ export default class Application {
   }
 
   boot() {
-    this.initializers.toArray().forEach((initializer) => initializer(this));
+    if (this.data.attributes.bootExtensions) {
+      this.initializers.toArray().forEach((initializer) => initializer(this));
+    }
 
     this.store.pushPayload({ data: this.data.resources });
 
diff --git a/src/Api/Serializer/ForumSerializer.php b/src/Api/Serializer/ForumSerializer.php
index a0124fd52..888df743f 100644
--- a/src/Api/Serializer/ForumSerializer.php
+++ b/src/Api/Serializer/ForumSerializer.php
@@ -77,6 +77,7 @@ class ForumSerializer extends AbstractSerializer
             'baseUrl' => $url = $this->url->to('forum')->base(),
             'basePath' => parse_url($url, PHP_URL_PATH) ?: '',
             'debug' => $this->config->inDebugMode(),
+            'bootExtensions' => $this->config->bootExtensions(),
             'apiUrl' => $this->url->to('api')->base(),
             'welcomeTitle' => $this->settings->get('welcome_title'),
             'welcomeMessage' => $this->settings->get('welcome_message'),
diff --git a/src/Extension/ExtensionServiceProvider.php b/src/Extension/ExtensionServiceProvider.php
index 648b0285e..ea99588ce 100644
--- a/src/Extension/ExtensionServiceProvider.php
+++ b/src/Extension/ExtensionServiceProvider.php
@@ -11,6 +11,7 @@ namespace Flarum\Extension;
 
 use Flarum\Extension\Event\Disabling;
 use Flarum\Foundation\AbstractServiceProvider;
+use Flarum\Foundation\Config;
 use Illuminate\Contracts\Events\Dispatcher;
 
 class ExtensionServiceProvider extends AbstractServiceProvider
@@ -28,7 +29,12 @@ class ExtensionServiceProvider extends AbstractServiceProvider
         // below, so that extensions have a chance to register things on the
         // container before the core boots up (and starts resolving services).
         $this->container['flarum']->booting(function () {
-            $this->container->make('flarum.extensions')->extend($this->container);
+            /** @var Config */
+            $config = $this->container->make(Config::class);
+            
+            if ($config->bootExtensions()) {
+                $this->container->make('flarum.extensions')->extend($this->container);
+            }
         });
     }
 
diff --git a/src/Foundation/Config.php b/src/Foundation/Config.php
index e540bedfa..30466d95c 100644
--- a/src/Foundation/Config.php
+++ b/src/Foundation/Config.php
@@ -41,6 +41,11 @@ class Config implements ArrayAccess
     {
         return $this->data['offline'] ?? false;
     }
+    
+    public function bootExtensions(): bool
+    {
+        return $this->data['boot_extensions'] ?? true;
+    }
 
     private function requireKeys(...$keys)
     {