diff --git a/hosts/merope/acme.nix b/hosts/merope/acme.nix
index 21a772c2..7282d78d 100644
--- a/hosts/merope/acme.nix
+++ b/hosts/merope/acme.nix
@@ -9,6 +9,7 @@
       "bd.misterio.me" = {
         dnsProvider = "gandiv5";
         credentialsFile = "/data/etc/gandi/acme.key";
+        keyType = "rsa4096";
       };
     };
   };