diff --git a/registry.txt b/registry.txt
index c60835e9..fb85b6a9 100644
--- a/registry.txt
+++ b/registry.txt
@@ -1342,3 +1342,4 @@ https://github.com/Velleman/K1200.git|Contributed|K1200
 https://github.com/beegee-tokyo/DHTesp.git|Contributed|DHT sensor library for ESP32
 https://github.com/opensensinglab/tfmini.git|Contributed|TFMini
 https://github.com/pholmes2012/Simple_FRAM_FileSystem.git|Contributed|SFFS
+https://github.com/adafruit/Adafruit_Si7021.git|Contributed|Adafruit Si7021 Library