diff --git a/repositories.txt b/repositories.txt
index 865ce411..6277c632 100644
--- a/repositories.txt
+++ b/repositories.txt
@@ -1,3 +1,4 @@
+https://github.com/RobTillaart/relativity
 https://github.com/RobTillaart/TSL235R
 https://github.com/ArduinoShop/Seg7
 https://github.com/ARTS37/SerialMenuCmd