diff --git a/repositories.txt b/repositories.txt
index b8cdd283..92a56e8d 100644
--- a/repositories.txt
+++ b/repositories.txt
@@ -1,3 +1,4 @@
+https://github.com/leftCoast/LC_extSerial
 https://github.com/muchaste/Ardoxy/
 https://github.com/aneesharnavch/microdsp
 https://github.com/senex-code/CarBase