diff --git a/xarray/core/datatree.py b/xarray/core/datatree.py
index 5d6ca5dd74b..bc818eb5671 100644
--- a/xarray/core/datatree.py
+++ b/xarray/core/datatree.py
@@ -418,7 +418,6 @@ class DataTree(
     def __init__(
         self,
         data: Dataset | None = None,
-        parent: DataTree | None = None,
         children: Mapping[str, DataTree] | None = None,
         name: str | None = None,
     ):