diff --git a/content/posts/thoughts-on-postcards/index.md b/content/posts/thoughts-on-postcards/index.md
index ad563068..536b3f15 100644
--- a/content/posts/thoughts-on-postcards/index.md
+++ b/content/posts/thoughts-on-postcards/index.md
@@ -14,8 +14,10 @@ I've long admired and played with [postcards](/tags/postcards). For me there's a
 
 Art is, in my humble opinion, at its greatest when limitlessly exploring a limited space, and a postcards provide plenty of just this kind of freeing limitation. They can be heartfelt and genuine precisely _because_ they don't immediately invite a reply (unlike practically all other interpersonal communication), they invite novelty (like Mr. Bingo's hilarious [Hate Mail](https://mr.bingo/hate-mail-book/), or Lupi & Posavec's beautiful [Dear Data](https://www.dear-data.com/theproject)) _because_ they are so simple and (literally!) inflexible.
 
-Even now I'm slowly building a microsite gallery for the postcards my friend Claire sends me whenever she travels. Every one of them contains just one message: "Shut up, JP" in the local language. I love them.
+Even now I'm slowly building a microsite gallery[^1] for the postcards my friend Claire sends me whenever she travels. Every one of them contains just one message: "Shut up, JP" in the local language. I love them.
 
 {{< postcard shutup-singapore >}}
 
 I honestly think I'll always enjoy playing with postcards, in one form or another. If you'd ever like to tell me about your appreciation of them, a postcard you've seen or enjoyed receiving or sending, do reach out by email (I have a [standing invitation](/standing-invitation))! …and if you'd like to send me a postcard you only need write me an email and ask for my address.
+
+[^1]: I completed it! You can find it at [shutup.jp](https://shutup.jp) 😄