diff --git a/repositories.txt b/repositories.txt
index b0bdb156..4fa19a77 100644
--- a/repositories.txt
+++ b/repositories.txt
@@ -4689,3 +4689,4 @@ https://github.com/stm32duino/ISM330DHCX
 https://github.com/bitbank2/SLIC
 https://github.com/vChavezB/SimpleJ1939
 https://github.com/Jackal28/LMT87
+https://github.com/CMB27/ModbusRTUSlave