diff --git a/app/Models/CourseContent.php b/app/Models/CourseContent.php
index 3a8b207..95b0141 100755
--- a/app/Models/CourseContent.php
+++ b/app/Models/CourseContent.php
@@ -78,8 +78,8 @@ class CourseContent extends SoftDeletesModel
         ];
         $app = Factory::miniProgram($config);
         $tmp = $app->app_code->get('/packages/sign/index?course_content_id' . $courseContentId, [
-            'env_version' => "release"  //  正式版
-            // 'env_version' => "trial"  // 体验版
+            // 'env_version' => "release"  //  正式版
+            'env_version' => "trial"  // 体验版
         ]);
         $dir = dirname($path);
         $fileSys->ensureDirectoryExists($dir, 0755, true);