diff --git a/hosts/sid/services/step-ca.nix b/hosts/sid/services/step-ca.nix
index 8ce01bd..45a43ae 100644
--- a/hosts/sid/services/step-ca.nix
+++ b/hosts/sid/services/step-ca.nix
@@ -73,7 +73,12 @@ in
 
   security.acme = {
     certs."sid-internal" = {
-      domain = "*.${constants.intranet}";
+      domain = constants.intranet;
+      extraDomainNames = [
+        constants.services.netdata.fqdn
+        constants.services.vaultwarden.fqdn
+        constants.services.webdav.fqdn
+      ];
       server = "https://${constants.ca-fqdn}:${toString cfg.port}/acme/acme/directory";
       group = "nginx";
     };