diff --git a/repositories.txt b/repositories.txt
index ac8f433c..1f3d1b5f 100644
--- a/repositories.txt
+++ b/repositories.txt
@@ -1,3 +1,4 @@
+https://github.com/austin207/ArduinoCalculus.git
 https://github.com/salim-mrw/USB-Rubber
 https://github.com/salernosimone/espkit-arduino
 https://github.com/salernosimone/tensorflow-runtime-universal-arduino