diff --git a/_Sidebar.md b/_Sidebar.md
index 7fb5c02..d383968 100644
--- a/_Sidebar.md
+++ b/_Sidebar.md
@@ -17,6 +17,7 @@
 - [[Mouse|mouse-api]]
 - [[Terminal|terminal-api]]
   - [[Termbox|termbox-api]]
+  - [[Tcell|tcell-api]]
 
 ### Infrastructure layer