diff --git a/app/Http/Requests/ParticipationRequest.php b/app/Http/Requests/ParticipationRequest.php
index 44b625b..82580a3 100644
--- a/app/Http/Requests/ParticipationRequest.php
+++ b/app/Http/Requests/ParticipationRequest.php
@@ -28,7 +28,7 @@ class ParticipationRequest extends FormRequest
     {
         return [
             'magasin' => 'required|exists:magasins,id',
-            'buydate' => 'required|date_format:Y-m-d|before:' . Carbon::now()->addDay()->format('Y-m-d'),
+            'buydate' => 'required|date_format:Y-m-d|after:2020-01-01|before:' . Carbon::now()->addDay()->format('Y-m-d'),
             'ean' => [
                 'required',
                 'numeric',