diff --git a/README.md b/README.md
index 5d5d502..4b09169 100644
--- a/README.md
+++ b/README.md
@@ -60,6 +60,7 @@ This project is developed and maintained by the [Resources team][team].
     * [Sony](#sony)
     * [STMicroelectronics](#stmicroelectronics-2)
     * [Texas Instruments](#texas-instruments-2)
+    * [Teensy](#teensy)
     * [Special Purpose](#special-purpose)
 * [Component abstraction crates](#component-abstraction-crates)
 * [Driver crates](#driver-crates)
@@ -480,6 +481,9 @@ Crates tailored for specific boards.
 
 [Nucleo-F401RE]: https://www.st.com/en/evaluation-tools/nucleo-f401re.html
 
+### Teensy
+- [`teensy4-rs`](https://github.com/mciantyre/teensy4-rs) Board Support create for the [Teensy 4.0]
+
 ### Texas Instruments
 
 - [`monotron`](https://github.com/thejpster/monotron) - A 1980s home-computer style application for the Texas Instruments Stellaris Launchpad. PS/2 keyboard input, text output on a bit-bashed 800x600 VGA signal. Uses [menu], [vga-framebuffer] and [pc-keyboard].