diff --git a/README.md b/README.md
index 91dcf7c..66b1058 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,7 @@ A C programming SDK for the TI-83 calculator. Includes pre-configured build syst
 - A GNU/Linux system.
 - TilEm
 - SDCC
+- RabbitSign
 
 ## Status