diff --git a/hosts/www/nginx.nix b/hosts/www/nginx.nix
index ea63c17..804c95a 100644
--- a/hosts/www/nginx.nix
+++ b/hosts/www/nginx.nix
@@ -84,9 +84,15 @@ in
             autoindex on;
           '';
         };
-        "~ ^/calendars/[^/]+\.ics$" = {
-          root = "/srv/http/ics";
-          tryFiles = "$uri $uri/ $uri.ics =404";
+        "~ ^/calendar/([^/]+\.ics)$" = {
+          alias = "/srv/http/calendars/$1";
+          extraConfig = ''
+            add_header Cache-Control "no-cache";
+            types {
+              text/calendar ics;
+            }
+            default_type text/calendar;
+          '';
         };
       };
     };