diff --git a/app/Http/Requests/StudyMetadataUpdateRequest.php b/app/Http/Requests/StudyMetadataUpdateRequest.php
index bcb1870..a99bd1c 100644
--- a/app/Http/Requests/StudyMetadataUpdateRequest.php
+++ b/app/Http/Requests/StudyMetadataUpdateRequest.php
@@ -21,7 +21,7 @@ public function rules(): array
             'referring_physician_name' => ['nullable'],
             'institution_name' => ['nullable'],
             'priority' => ['required', 'integer'],
-            'cancel_read' => ['nullable', 'boolean'],
+            'cancel_read' => ['accepted'],
 
             /*
             'referring_physician_id' => ['nullable', 'exists:users,id'],