diff --git a/installer/PROJECT_TREE.md b/installer/PROJECT_TREE.md
index c910980..ee3f383 100644
--- a/installer/PROJECT_TREE.md
+++ b/installer/PROJECT_TREE.md
@@ -31,6 +31,7 @@ installer/
 │   │   ├── doctor.rs
 │   │   ├── install.rs
 │   │   ├── mod.rs
+│   │   ├── npc.rs
 │   │   ├── plugin.rs
 │   │   ├── record.rs
 │   │   ├── server.rs