diff --git a/app/Http/Controllers/Admin/PostsController.php b/app/Http/Controllers/Admin/PostsController.php
index dd034ec..5d91819 100644
--- a/app/Http/Controllers/Admin/PostsController.php
+++ b/app/Http/Controllers/Admin/PostsController.php
@@ -119,6 +119,7 @@ public function update(PostStoreRequest $request, Post $post)
             DB::beginTransaction();
             try {
                 $data = $this->getValidatedData($request);
+                unset($data['author_id']);
                 $post->update($data);
                 $this->saveCategories($request, $post);