diff --git a/app/Models/CourseType.php b/app/Models/CourseType.php
index 25aaf67..072cf77 100755
--- a/app/Models/CourseType.php
+++ b/app/Models/CourseType.php
@@ -6,7 +6,7 @@ namespace App\Models;
 
 class CourseType extends SoftDeletesModel
 {
-    const START_DATE = '2020-01-01 00:00:00';
+    const START_DATE = '2019-12-31';
 
     protected $appends = ['is_count_genban_text'];