diff --git a/README.md b/README.md
index 5009c97..5e55627 100644
--- a/README.md
+++ b/README.md
@@ -58,3 +58,7 @@ sfdisk -d > disk.sfdisk
  * Mutex
  * ATA
  * basic userspace with syscall
+
+# TODO
+ * ringbuffer protected by mutex
+ * blocking read