diff --git a/modules/nixos/guests/firefly-iii/default.nix b/modules/nixos/guests/firefly-iii/default.nix
index 6a08252..adcec4f 100755
--- a/modules/nixos/guests/firefly-iii/default.nix
+++ b/modules/nixos/guests/firefly-iii/default.nix
@@ -71,7 +71,10 @@ in
 
                 encode gzip
 
-                php_fastcgi unix//run/phpfpm/firefly-iii.sock
+                php_fastcgi unix//run/phpfpm/firefly-iii.sock {
+                  env SERVER_NAME {http.request.header.X-Forwarded-Host}
+                  env HTTPS on
+                }
               '';
             };
           };
@@ -241,9 +244,10 @@ in
   services.caddy.virtualHosts."${host}" = {
     extraConfig = ''
       reverse_proxy http://${serviceCfg.interface.ip}:80 {
-        header_up X-Forwarded-Proto {scheme}
+        header_up X-Forwarded-Proto https
         header_up X-Forwarded-Host {host}
       }
+
       tls ${serviceCfg.ssl.cert} ${serviceCfg.ssl.key}
 
       encode zstd gzip