diff --git a/template/README.md b/template/README.md
index 694475d..591c354 100644
--- a/template/README.md
+++ b/template/README.md
@@ -2,6 +2,9 @@
 
 This is an example repository for nixos-anywhere and disko.
 
+* disko reference: https://github.com/nix-community/disko/blob/master/docs/reference.md
+* nixos-anywhere reference: https://github.com/nix-community/nixos-anywhere/blob/main/docs/reference.md
+
 ## Build installer ISO with passwordless SSH
 
 ```shell
diff --git a/template/disk-configs/luks-btrfs.nix b/template/disk-configs/luks-btrfs.nix
index 0da314f..3c9c020 100644
--- a/template/disk-configs/luks-btrfs.nix
+++ b/template/disk-configs/luks-btrfs.nix
@@ -35,6 +35,13 @@
             content = {
               type = "luks";
               name = "crypted";
+              # Additional arguments passed to luksFormat:
+              # - 4GB RAM to unlock disk
+              # - 5 seconds to open
+              extraFormatArgs = [
+               "--cipher" "aes-xts-plain64" "--key-size" "512" "--hash" "sha512"
+               "--pbkdf-memory" "4000000" "--iter-time" "5000" "--use-random"
+              ];
               extraOpenArgs = [ "--allow-discards" ];
               # If you want to use the key for interactive login be sure there is no trailing newline.
               # For example use `echo -n 'password' > /tmp/secret.key`