diff --git a/helix-term/src/ui/tree.rs b/helix-term/src/ui/tree.rs
index c147b1e3..d8e00741 100644
--- a/helix-term/src/ui/tree.rs
+++ b/helix-term/src/ui/tree.rs
@@ -208,6 +208,8 @@ impl<T: TreeItem> Tree<T> {
 
         self.sort();
 
+        self.regenerate_index();
+
         Ok(())
     }