diff --git a/api/static-site.ts b/api/static-site.ts
index 5719e60..beb274c 100644
--- a/api/static-site.ts
+++ b/api/static-site.ts
@@ -266,7 +266,12 @@ const NGINX_CONF = `server {
   # the filename is a hash of the original, the framing, the slot and the width, so the bytes at a given
   # URL can never legitimately change. A re-crop is a different name, and the HTML that carries it is
   # revalidated every visit. This is the difference from /derived/ above, which is rewritten in place.
-  location ^~ /images/ {
+  #
+  # `/crops/`, and it was `/images/` until 2026-08-31 — a name taken from the URL rather than from what
+  # is behind it, beside two other directories equally full of images. A site published before the
+  # rename has `/images/` in its HTML and no longer has the files; the fix is a publish, which rewrites
+  # every one of these URLs anyway.
+  location ^~ /crops/ {
     expires 1y;
     add_header Cache-Control "public, immutable";
   }