diff --git a/modules/nixos/guests/firefly-iii/default.nix b/modules/nixos/guests/firefly-iii/default.nix
index 928e59b..fcf3188 100755
--- a/modules/nixos/guests/firefly-iii/default.nix
+++ b/modules/nixos/guests/firefly-iii/default.nix
@@ -56,6 +56,11 @@ in
             };
           };
 
+          phpfpm.pools.firefly-iii.phpEnv = {
+            TRUSTED_PROXIES = "*";
+            APP_URL = "https://${host}";
+          };
+
           firefly-iii-data-importer = {
             enable = true;
           };
@@ -70,7 +75,10 @@ in
 
                 encode gzip
 
-                php_fastcgi unix//run/phpfpm/firefly-iii.sock
+                php_fastcgi unix//run/phpfpm/firefly-iii.sock {
+                  env HTTPS {http.request.header.X-Forwarded-Proto}
+                  env HTTP_X_FORWARDED_PROTO {http.request.header.X-Forwarded-Proto}
+                }
               '';
             };
           };