diff --git a/repositories.txt b/repositories.txt
index ea7a3b37..85f898f8 100644
--- a/repositories.txt
+++ b/repositories.txt
@@ -1,3 +1,4 @@
+https://github.com/bolderflight/ms4525do
 https://github.com/MSZ98/pcf8574
 https://github.com/Narwhalsss360/NTimer
 https://github.com/Narwhalsss360/NDefs