diff --git a/repositories.txt b/repositories.txt
index 9087d65c..3eaff9b2 100644
--- a/repositories.txt
+++ b/repositories.txt
@@ -4068,3 +4068,4 @@ https://github.com/cotestatnt/AsyncTelegram2
 https://github.com/khoih-prog/WiFiWebServer_RTL8720
 https://github.com/geeny/geenymodem
 https://github.com/mandulaj/PZEM-004T-v30/
+https://github.com/Silver-Fang/Low-level-quick-digital-IO