diff --git a/src/textual/widgets/_tree.py b/src/textual/widgets/_tree.py
index ef1f25902..83d322905 100644
--- a/src/textual/widgets/_tree.py
+++ b/src/textual/widgets/_tree.py
@@ -307,6 +307,7 @@ class TreeNode(Generic[TreeDataType]):
         self._updates += 1
         text_label = self._tree.process_label(label)
         self._label = text_label
+        self._tree._refresh_node(self)
 
     def add(
         self,