diff --git a/ayanova/devdocs/todo.txt b/ayanova/devdocs/todo.txt
index 2689a5a8..3967e118 100644
--- a/ayanova/devdocs/todo.txt
+++ b/ayanova/devdocs/todo.txt
@@ -795,3 +795,4 @@ BUILD 134 CHANGES OF NOTE
 - case 3999
 - case 4002 partly a fix, partly can't reproduce, see notes
 - case 4004
+- case 4006
\ No newline at end of file