diff --git a/src/experimental/note.md b/src/experimental/note.md
index d6d1dfc9..a4b4c44d 100644
--- a/src/experimental/note.md
+++ b/src/experimental/note.md
@@ -16,4 +16,5 @@ new:
 - polyline_join: doc multi-childs
 
 - util/count
-- lemniscate_curve?
\ No newline at end of file
+- lemniscate_curve?
+- perlin_sphere?
\ No newline at end of file