diff --git a/container/webserver/default.nix b/container/webserver/default.nix
index 45e470a..568fd73 100644
--- a/container/webserver/default.nix
+++ b/container/webserver/default.nix
@@ -46,10 +46,13 @@ in
     http3 = true;
 
     root = "/etc/container-webserver/weewx/html/wdc";
-    index = "index.html";
     forceSSL = true;
     useACMEHost = "kempkens.io";
 
+    extraConfig = ''
+      index index.html;
+    '';
+
     location."~* \.html$".extraConfig = ''
       expires modified 120s;
     '';