diff --git a/routes/api.php b/routes/api.php
index 96e445e4a169..552f3d18a9bc 100644
--- a/routes/api.php
+++ b/routes/api.php
@@ -215,7 +215,7 @@ Route::match(['get', 'post'], 'payment_notification_webhook/{company_key}/{compa
     ->middleware(['guest'])
     ->name('payment_notification_webhook');
 
-Route::post('api/v1/postmark_webhook', 'PostMarkController@webhook');
+Route::post('api/v1/postmark_webhook', 'PostMarkController@webhook')->middleware(['throttle:5000,1']);
 Route::get('token_hash_router', 'OneTimeTokenController@router');
 Route::get('webcron', 'WebCronController@index');
 Route::post('api/v1/get_migration_account', 'HostedMigrationController@getAccount')->middleware('guest');