diff --git a/README.md b/README.md
index 2453c0c..ee2b2f8 100644
--- a/README.md
+++ b/README.md
@@ -48,8 +48,12 @@ This project is developed and maintained by the [Resources team][team].
     * [RISC-V](#risc-v)
     * [MIPS](#mips)
 * [Board support crates](#board-support-crates)
+    * [1BitSquared](#1bitsquared)
+    * [Adafruit](#adafruit)
+    * [Arduino](#arduino)
     * [Nordic](#nordic-2)
     * [NXP](#nxp-2)
+    * [Sparkfun](#sparkfun)
     * [SeeedStudio](#seeedstudio)
     * [SiFive](#sifive-2)
     * [Sipeed](#sipeed)