diff --git a/nixos/configuration.nix b/nixos/configuration.nix
index ea7043e..50b4b7c 100755
--- a/nixos/configuration.nix
+++ b/nixos/configuration.nix
@@ -87,10 +87,14 @@ in
     };
     # only generate for static site
     certs = {
-      "roypository.com" = {
+      "nimh.roypository.com" = {
         domain = "nimh.roypository.com";
         group = "nginx";
       };
+      "imgs.roypository.com" = {
+        domain = "imgs.roypository.com";
+        group = "nginx";
+      };
     };
   };
 
@@ -103,7 +107,7 @@ in
 
     virtualHosts."nimh.roypository.com" = {
       forceSSL = true;
-      useACMEHost = "roypository.com";
+      useACMEHost = "nimh.roypository.com";
 
       locations."/" = {
         root = nimhStaticSite;