diff --git a/nixos/modules/services/security/vault.nix b/nixos/modules/services/security/vault.nix
index 8176c168ca94..d5962ba9af90 100644
--- a/nixos/modules/services/security/vault.nix
+++ b/nixos/modules/services/security/vault.nix
@@ -70,7 +70,7 @@ in
       };
 
       storageBackend = mkOption {
-        type = types.enum [ "inmem" "file" "consul" "zookeeper" "s3" "azure" "dynamodb" "etcd" "mssql" "mysql" "postgresql" "swift" "gcs" ];
+        type = types.enum [ "inmem" "file" "consul" "zookeeper" "s3" "azure" "dynamodb" "etcd" "mssql" "mysql" "postgresql" "swift" "gcs" "raft" ];
         default = "inmem";
         description = "The name of the type of storage backend";
       };