diff --git a/inbox.md b/inbox.md
index 9329b8a..3e5ef3a 100644
--- a/inbox.md
+++ b/inbox.md
@@ -1,3 +1,4 @@
+make sure AWS doesn't charge
 wiki and blog
 Sergei's PDF & Discord networking challenge
 electronics books/art of programming (I want this, but it's not necessary)