diff --git a/Models/EditorDocMapper.php b/Models/EditorDocMapper.php
index ad02b4c..208b473 100644
--- a/Models/EditorDocMapper.php
+++ b/Models/EditorDocMapper.php
@@ -30,7 +30,7 @@ final class EditorDocMapper extends DataMapperAbstract
     /**
      * Columns.
      *
-     * @var array<string, array{name:string, type:string, internal:string, autocomplete?:bool, annotations?:array}>
+     * @var array<string, array{name:string, type:string, internal:string, autocomplete?:bool, readonly?:bool, annotations?:array}>
      * @since 1.0.0
      */
     protected static array $columns = [
@@ -40,7 +40,7 @@ final class EditorDocMapper extends DataMapperAbstract
         'editor_doc_plain'      => ['name' => 'editor_doc_plain',      'type' => 'string',   'internal' => 'plain'],
         'editor_doc_content'    => ['name' => 'editor_doc_content',    'type' => 'string',   'internal' => 'content'],
         'editor_doc_path'       => ['name' => 'editor_doc_path',       'type' => 'string',   'internal' => 'path'],
-        'editor_doc_created_at' => ['name' => 'editor_doc_created_at', 'type' => 'DateTime', 'internal' => 'createdAt'],
+        'editor_doc_created_at' => ['name' => 'editor_doc_created_at', 'type' => 'DateTime', 'internal' => 'createdAt', 'readonly' => true],
     ];
 
     /**