diff --git a/backend/app/api/graph.py b/backend/app/api/graph.py
index 12ff1ba2..378ae75b 100644
--- a/backend/app/api/graph.py
+++ b/backend/app/api/graph.py
@@ -554,7 +554,7 @@ def list_tasks():
     
     return jsonify({
         "success": True,
-        "data": [t.to_dict() for t in tasks],
+        "data": tasks,
         "count": len(tasks)
     })