diff --git a/repositories.txt b/repositories.txt
index 409d2db9..62203add 100644
--- a/repositories.txt
+++ b/repositories.txt
@@ -5351,3 +5351,4 @@ https://github.com/khoih-prog/WiFi101_Generic
 https://github.com/zivoy/AdaptiveMapping
 https://github.com/hafidhh/Callmebot-ESP8266
 https://github.com/608/CH55xSwitchControl
+https://github.com/maxpromer/PCA9557-arduino