diff --git a/repositories.txt b/repositories.txt
index ff53c808..69b44ddc 100644
--- a/repositories.txt
+++ b/repositories.txt
@@ -4188,3 +4188,4 @@ https://github.com/levkovigor/GT811
 https://github.com/iotkaran/Arduino
 https://github.com/levkovigor/LTR390
 https://github.com/1452206376/CH9328-Keyboard
+https://github.com/9glt/arduino-attiny85-mcp23017-library