diff --git a/resources/views/layout.blade.php b/resources/views/layout.blade.php
index f2d3e9e65..ccad3a67b 100644
--- a/resources/views/layout.blade.php
+++ b/resources/views/layout.blade.php
@@ -192,6 +192,12 @@
             </div>
 
             <div class="col-10">
+                @if (! $assetsAreCurrent)
+                    <div class="alert alert-warning">
+                        The published Telescope assets are not up-to-date with the installed version. To update, run:<br/><code>php artisan telescope:publish</code>
+                    </div>
+                @endif
+
                 <router-view></router-view>
             </div>
         </div>
diff --git a/src/Http/Controllers/HomeController.php b/src/Http/Controllers/HomeController.php
index c106e87fc..96dcf425b 100644
--- a/src/Http/Controllers/HomeController.php
+++ b/src/Http/Controllers/HomeController.php
@@ -17,6 +17,7 @@ public function index()
         return view('telescope::layout', [
             'cssFile' => Telescope::$useDarkTheme ? 'app-dark.css' : 'app.css',
             'telescopeScriptVariables' => Telescope::scriptVariables(),
+            'assetsAreCurrent' => Telescope::assetsAreCurrent(),
         ]);
     }
 }
diff --git a/src/Telescope.php b/src/Telescope.php
index 02926f8fb..cd5317994 100644
--- a/src/Telescope.php
+++ b/src/Telescope.php
@@ -7,6 +7,7 @@
 use Illuminate\Contracts\Debug\ExceptionHandler;
 use Illuminate\Log\Events\MessageLogged;
 use Illuminate\Support\Facades\Auth;
+use Illuminate\Support\Facades\File;
 use Illuminate\Support\Str;
 use Laravel\Telescope\Contracts\EntriesRepository;
 use Laravel\Telescope\Contracts\TerminableRepository;
@@ -701,4 +702,21 @@ public static function ignoreMigrations()
 
         return new static;
     }
+
+    /**
+     * Check if assets are up-to-date.
+     *
+     * @throws \Illuminate\Contracts\Filesystem\FileNotFoundException
+     * @return bool
+     */
+    public static function assetsAreCurrent()
+    {
+        $publishedPath = public_path('vendor/telescope/mix-manifest.json');
+
+        if (! File::exists($publishedPath)) {
+            throw new \RuntimeException('The Telescope assets are not published. Please run: php artisan telescope:publish');
+        }
+
+        return File::get($publishedPath) === File::get(__DIR__.'/../public/mix-manifest.json');
+    }
 }