diff --git a/_Sidebar.md b/_Sidebar.md
index 6699111..a4d36d5 100644
--- a/_Sidebar.md
+++ b/_Sidebar.md
@@ -165,6 +165,7 @@
   * [Theme-system](Theme-system)
   * [Debug via SWD & JTAG](Debug-via-SWD-&-JTAG)
   * [Debug with serial](Debug-with-serial)
+  * [I2C drivers](I2C-external-device-driver-integration)
 * Tools
   * [make_airlines_db.py](Make-airlines-db)
   * [make_icao24_db.py](Make-icao24-db)