diff --git a/TODO b/TODO
index 9580ddb..4a393e6 100644
--- a/TODO
+++ b/TODO
@@ -7,6 +7,7 @@ expand extension map
 maybe start serving highlighting on the other end to save transfer on highlight.js
 start using CDNs for most assets
 kick expiration back by increment on each view
+Add file extensions ourselves to push state
 
 # shared version only
 some way to do announcements easily (and use for ads)