diff --git a/internal/face/children.go b/internal/face/children.go
index 673f15060..8a0e3d61c 100644
--- a/internal/face/children.go
+++ b/internal/face/children.go
@@ -7,4 +7,4 @@ var Children = Embeddings{
 }
 
 // ChildrenRadius is the distance threshold to be recognized as child.
-var ChildrenRadius = 0.695
+var ChildrenRadius = 0.66