diff --git a/doc/todo.txt b/doc/todo.txt
index 2b76d01..6aa24a6 100644
--- a/doc/todo.txt
+++ b/doc/todo.txt
@@ -2,5 +2,6 @@
   example: https://www.reddit.com/r/funny.rss
 - fix: use only 1 item content field
 - etc: test new parser extensively
+- etc: readability strips out code comments in https://2ality.com/2021/01/looping-over-arrays.html
 - fix: loading items (by scrolling down) is glitching while feeds are refreshing