diff --git a/TODO.md b/TODO.md
index 67fd6fc..a382773 100644
--- a/TODO.md
+++ b/TODO.md
@@ -10,7 +10,6 @@
 
 - `hologram` component
 - `computer` component
-- `tunnel` component
 - `data` component (with error correction codes and maybe synthesizing audio)
 - `redstone` component
 - `internet` component