diff --git a/sys/platforms/vps/srv/isso.nix b/sys/platforms/vps/srv/isso.nix
index eb6e23c..6715e85 100644
--- a/sys/platforms/vps/srv/isso.nix
+++ b/sys/platforms/vps/srv/isso.nix
@@ -37,6 +37,7 @@ with lib; {
         };
         guard = {
           require-author = true;
+          require-email = true;
         };
       };
     };