diff --git a/nixos/modules/issuer.nix b/nixos/modules/issuer.nix
index 10368e4db1093f9d32d03dc73a83fa43ae08b8aa..42fb5b1d68f08784d7583fdc92a450c4b3207f60 100644
--- a/nixos/modules/issuer.nix
+++ b/nixos/modules/issuer.nix
@@ -141,9 +141,9 @@ in {
           pkgs.writeScript "cert-${cfg.domain}-start.sh" ''
           #!${pkgs.runtimeShell} -e
           # Register if necessary.
-          ${pkgs.certbot}/bin/certbot register ${configArgs} --agree-tos -m ${cfg.letsEncryptAdminEmail} || true
+          ${pkgs.certbot}/bin/certbot register ${configArgs} --non-interactive --agree-tos -m ${cfg.letsEncryptAdminEmail} || true
           # Obtain the certificate.
-          ${pkgs.certbot}/bin/certbot certonly ${configArgs} -n --standalone --domains ${cfg.domain}
+          ${pkgs.certbot}/bin/certbot certonly ${configArgs} --non-interactive --standalone --domains ${cfg.domain}
           '';
       };
     };