diff --git a/registry.txt b/registry.txt
index e0fd7f0c..a14ee1cd 100644
--- a/registry.txt
+++ b/registry.txt
@@ -5259,3 +5259,4 @@ https://github.com/adnan-elabdullah/IOTKME.git|Contributed|IOTKME
 https://github.com/CalvinBultz/LightningStepper.git|Contributed|LightningStepper
 https://github.com/luni64/CallbackHelper.git|Contributed|CallbackHelper
 https://github.com/dnzayan/ESP32_Pinoo.git|Contributed|ESP32_Pinoo
+https://github.com/ndomx/MCP23017-Arduino-Library.git|Contributed|MCP23017 Port Expander