diff --git a/app/migrations/20230906.210154_0_add_active_at_column_to_users_table.php b/app/migrations/20230906.210154_0_add_active_at_column_to_users_table.php
new file mode 100644
index 00000000..6655b1e4
--- /dev/null
+++ b/app/migrations/20230906.210154_0_add_active_at_column_to_users_table.php
@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App;
+
+use Cycle\Migrations\Migration;
+
+class AddActiveAtColumnToUsersTableMigration extends Migration
+{
+    public function up(): void
+    {
+        $this->table('users')
+             ->addColumn('active_at', 'datetime', [
+                 'nullable' => true,
+                 'default'  => null,
+             ])
+             ->update();
+    }
+
+    public function down(): void
+    {
+        $this->table('users')
+             ->dropColumn('active_at')
+             ->update();
+    }
+}
diff --git a/app/src/Auth/AuthMiddleware.php b/app/src/Auth/AuthMiddleware.php
index f4943cbb..9720fa5f 100644
--- a/app/src/Auth/AuthMiddleware.php
+++ b/app/src/Auth/AuthMiddleware.php
@@ -6,6 +6,7 @@
 
 use App\Database\User;
 use App\Service\UserOptionsService;
+use App\Service\UserService;
 use Laminas\Diactoros\Response\JsonResponse;
 use Psr\Http\Server\MiddlewareInterface;
 use Psr\Http\Server\RequestHandlerInterface;
@@ -23,6 +24,7 @@ class AuthMiddleware implements MiddlewareInterface
     const USER_LOCALE = 'X-Internal-UserLocale';
 
     public function __construct(
+        private readonly UserService $userService,
         private readonly UserOptionsService $userOptionsService,
     ) {
     }
@@ -44,19 +46,28 @@ public function process(Request $request, RequestHandlerInterface $handler): Res
             return $this->unauthenticated();
         }
 
+        $this->trackActiveAt($actor);
+
         return $handler->handle(
             $request->withAddedHeader(self::HEADER_USER_ID, (string) $actor->id)
                     ->withAttribute(self::USER_LOCALE, $this->userOptionsService->getLocale($actor))
         );
     }
 
-    /**
-     * @return \Psr\Http\Message\ResponseInterface
-     */
     private function unauthenticated(): Response
     {
         return new JsonResponse([
             'message' => $this->say('error_authentication_required'),
         ], 401);
     }
+
+    private function trackActiveAt(User $user): void
+    {
+        $user->activeAt = new \DateTimeImmutable();
+
+        try {
+            $this->userService->store($user);
+        } catch (\Throwable) {
+        }
+    }
 }
diff --git a/app/src/Database/User.php b/app/src/Database/User.php
index 0f307b3c..17bea735 100644
--- a/app/src/Database/User.php
+++ b/app/src/Database/User.php
@@ -58,6 +58,9 @@ class User implements PasswordContainerInterface
     #[ORM\Column(type: 'datetime', name: 'updated_at')]
     public \DateTimeImmutable $updatedAt;
 
+    #[ORM\Column(type: 'datetime', name: 'active_at', nullable: true, default: null)]
+    public ?\DateTimeImmutable $activeAt = null;
+
     #[ORM\Relation\BelongsTo(target: Currency::class, innerKey: 'default_currency_code', cascade: true, load: 'eager')]
     private Currency $defaultCurrency;