diff --git a/registry.txt b/registry.txt
index bb8fad9c..c33299c3 100644
--- a/registry.txt
+++ b/registry.txt
@@ -7786,3 +7786,4 @@ https://github.com/ddchung/Async-HC-SR04-Lib.git|Contributed|Distance-Sensor
 https://github.com/Alex-Stone-Github/CNCShield.git|Contributed|CNCShield
 https://github.com/bitbank2/FastEPD.git|Contributed|FastEPD
 https://github.com/jerry-magnin/Mem24CSM01.git|Contributed|Mem24CSM01
+https://github.com/RobTillaart/TCA9554.git|Contributed|TCA9554