diff --git a/machines/fanny/configuration.nix b/machines/fanny/configuration.nix
index defb3f4..b876569 100644
--- a/machines/fanny/configuration.nix
+++ b/machines/fanny/configuration.nix
@@ -302,13 +302,22 @@ in
     virtualHosts."hydra.malobeo.org" = {
       forceSSL = true;
       enableACME = true;
-      locations."/".proxyPass = "http://${hosts.malobeo.hosts.albert.network.address}:3000";
+      locations."/" = {
+        proxyPass = "http://${hosts.malobeo.hosts.albert.network.address}:3000";
+        extraConfig = ''
+          proxy_set_header Host $host;
+        '';
+      };
     };
     virtualHosts."cache.malobeo.org" = {
       forceSSL = true;
       enableACME = true;
-      locations."/".proxyPass = "http://${hosts.malobeo.hosts.albert.network.address}:5000";
-    };
+      locations."/" = {
+        proxyPass = "http://${hosts.malobeo.hosts.albert.network.address}:5000";
+        extraConfig = ''
+          proxy_set_header Host $host;
+        '';
+      };
   };
 
   services.tor = {