diff --git a/registry.txt b/registry.txt
index c8211887..9eb4c61e 100644
--- a/registry.txt
+++ b/registry.txt
@@ -4266,3 +4266,4 @@ https://github.com/m5stack/M5_BMM150.git|Contributed|M5_BMM150
 https://github.com/m5stack/M5_ADS1115.git|Contributed|M5_ADS1115
 https://github.com/PowerBroker2/ArduPID.git|Contributed|ArduPID
 https://github.com/m5stack/M5_AD9833.git|Contributed|M5_AD9833
+https://github.com/Tinyu-Zhao/PCA9554.git|Contributed|PCA9554