diff --git a/undocumented_features/undocumented_note.md b/undocumented_features/undocumented_note.md
index 8b9b9543..a2517561 100644
--- a/undocumented_features/undocumented_note.md
+++ b/undocumented_features/undocumented_note.md
@@ -19,3 +19,5 @@ triangulate
 shape_taiwan: new `dt` parameter
 
 bijection_offset: new `epsilon` parameter
+
+path_extrude: new `method` parameter
\ No newline at end of file