diff --git a/registry.txt b/registry.txt
index bc91cafb..c8e9e06c 100644
--- a/registry.txt
+++ b/registry.txt
@@ -3168,3 +3168,4 @@ https://github.com/lvgl/lv_arduino.git|Contributed|lv_arduino
 https://github.com/khoih-prog/SinricPro_Generic.git|Contributed|SinricPro_Generic
 https://github.com/PulseRain/PulseRainUARTConsole.git|Contributed|PulseRainUARTConsole
 https://github.com/tripplefox/TsicSensor.git|Contributed|TsicSensor
+https://github.com/RobTillaart/PCF8574.git|Contributed|PCF8574