diff --git a/app/Http/Controllers/ApiController.php b/app/Http/Controllers/ApiController.php
index 288e317..8c251e4 100644
--- a/app/Http/Controllers/ApiController.php
+++ b/app/Http/Controllers/ApiController.php
@@ -29,6 +29,7 @@ class ApiController extends Controller
 				DB::table('task_history')
 					->select('id', DB::raw('MAX(created_at) as created_at'), 'output', 'status', 'task_id')
 					->groupBy('id')
+					->groupBy('output')
 				, 'task_history', function($join) {
 				$join
 					->on('task_history.task_id', '=', 'tasks.id')