diff --git a/repositories.txt b/repositories.txt
index f284b16c..38e24191 100644
--- a/repositories.txt
+++ b/repositories.txt
@@ -257,6 +257,7 @@ https://github.com/FTTechBrasil/AqualaboSensor
 https://github.com/PowerBroker2/MotorController
 https://github.com/MrYsLab/NanoConnectHcSr04
 https://github.com/Tinyu-Zhao/TinyGPSPlus
+https://github.com/m5stack/M5Module-4Relay
 https://github.com/m5stack/M5Unit-ACSSR
 https://github.com/m5stack/M5_BH1750FVI
 https://github.com/m5stack/M5Unit-EXTIO2