diff --git a/repositories.txt b/repositories.txt
index cf544501..d5eb4207 100644
--- a/repositories.txt
+++ b/repositories.txt
@@ -4200,3 +4200,4 @@ https://github.com/107-systems/107-Arduino-BoostUnits
 https://github.com/107-systems/107-Arduino-Sensor
 https://github.com/Dirk-/NanoBLEFlashPrefs
 https://github.com/natnqweb/Motor_PID
+https://github.com/natnqweb/Simpletimer