diff --git a/services/NormalBot.php b/services/NormalBot.php
index 9d2ca4c..fd0f821 100644
--- a/services/NormalBot.php
+++ b/services/NormalBot.php
@@ -783,6 +783,9 @@ class NormalBot
         } elseif ($dateMode === 'current_month') {
             $extraQuery['fecha_desde'] = date('Y-m-01');
             $extraQuery['fecha_hasta'] = date('Y-m-d');
+        } elseif ($dateMode === 'last_month') {
+            $extraQuery['fecha_desde'] = date('Y-m-01', strtotime('first day of last month'));
+            $extraQuery['fecha_hasta'] = date('Y-m-t', strtotime('last day of last month'));
         }
         $extraQuery['telefono'] = $context['from'];
         $extraQuery['nombre']   = $context['name'] ?? '';