diff --git a/repositories.txt b/repositories.txt
index ed72bddc..ec0238f5 100644
--- a/repositories.txt
+++ b/repositories.txt
@@ -6344,3 +6344,4 @@ https://github.com/zimbora/esp32-alarm
 https://github.com/zimbora/esp32-autorequest
 https://github.com/PTSolns/PTSolns_microWatt
 https://github.com/Ev-13/StopLoop-Library
+https://github.com/hasenradball/DS3231-RTC