diff --git a/posts/401.md b/posts/401.md
index f17570e3..f1c3a043 100644
--- a/posts/401.md
+++ b/posts/401.md
@@ -61,7 +61,7 @@ Those were just the largish projects that I worked on. Despite shipping five pro
 * Added functionality to this blog.
 * Redesigned natwelch.com.
 * Tried to optimize the way [mood.natwelch.com](https://mood.natwelch.com/) loads images.
-* Rewrote [walls.natwelch.com](https://walls.natwelch.com/) from scratch \(and boy does it still need a lot of work\).
+* Rewrote [walls.natwelch.com](https://web.archive.org/web/20241114090711/https://walls.natwelch.com/) from scratch \(and boy does it still need a lot of work\).
 * Tried to build a drum machine called [gene](https://github.com/icco/gene).
 * Started musing about building an [RSS reader](https://web.archive.org/web/20180611035045/https://github.com/icco/today). Got a rough prototype working, but that was it. I still want to take a lot of the stuff @kenzan100 was talking about and actually implement it... one day.
 * Went to a music hackathon at Spotify and built a really weird website that turned stars into sound called [starscape](https://github.com/icco/starscape).