diff --git a/config/c3d2.nix b/config/c3d2.nix
index 459fb3dc..4433e835 100644
--- a/config/c3d2.nix
+++ b/config/c3d2.nix
@@ -260,7 +260,11 @@ in {
       then {
         acceptTerms = true;
         # NixOS>=22.05
-        defaults.email = cfg.acmeEmail;
+        defaults = {
+          email = cfg.acmeEmail;
+          # letsencrypt staging server with way higher rate limits
+          # server = "https://acme-staging-v02.api.letsencrypt.org/directory";
+        };
       }
       else {
         acceptTerms = true;