diff --git a/README.md b/README.md
index 406124b..389e6cd 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,13 @@
 # Todo
 
-- input polling rate counter
-- settings serializer
-- ouptut websocket
-- led websocket
-- comments
+- major
+  - acio support
+- qol
+  - proper error handling
+  - comments
+- when umiguri comes out
+  - ouptut websocket
+  - led websocket
 
 ```
 Set-ExecutionPolicy -Scope Process -ExecutionPolicy Bypass