diff --git a/configuration.nix b/configuration.nix
index 223689e..9283c0a 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -49,6 +49,12 @@
     allowedTCPPorts = [ 22 80 443 ];  # SSH, HTTP, HTTPS
   };
 
+  # ACME for Let's Encrypt certificates
+  security.acme = {
+    acceptTerms = true;
+    defaults.email = "dlei@duck.com";
+  };
+
   # This value determines the NixOS release compatibility
   system.stateVersion = "24.05";
 }