diff --git a/Open Letter to Peter Singer.md b/Open Letter to Peter Singer.md
index 29fa1b2bf..5c2e5d56e 100644
--- a/Open Letter to Peter Singer.md	
+++ b/Open Letter to Peter Singer.md	
@@ -1,5 +1,6 @@
 - One of a series of [[Open Letters]].
-  - I thought I'd write this now years ago, maybe it will finally happen.
+- I thought I'd write this now years ago, maybe it will finally happen.
+  - I listened to [[Peter Singer]] with [[Sam Harris]] again on [[2024-02-25]].
 
 Hi Peter, I'm sure you get this often: you don't know me but I feel like I know you -- as I've gotten to know you through your books and your public conversations. I am writing this [[open letter]] in the hope that you will eventually find time to read it, or at least to skim it, but I do not write it with the intention of putting a burden on you; I am just doing out of the belief that it is worth thanking you, and asking you a question (which may be answered also for others which have good mental representations of your self, or might hold interesting opinions in their own right).