diff --git a/disko/btrfs_luks.nix b/disko/btrfs_luks.nix
index 876d5e3..90d0309 100644
--- a/disko/btrfs_luks.nix
+++ b/disko/btrfs_luks.nix
@@ -47,6 +47,10 @@
                       mountpoint = "/nix";
                       mountOptions = [ "compress=zstd" "noatime" "ssd" "discard=async" ];
                     };
+                    "@opt" = {
+                      mountpoint = "/opt";
+                      mountOptions = [ "compress=zstd" "noatime" "ssd" "discard=async" ];
+                    };
                     "@snapshots" = {
                       mountpoint = "/mnt";
                       mountOptions = [ "compress=zstd" "noatime" "ssd" "discard=async" ];