diff --git a/registry.txt b/registry.txt
index e1cc87eb..948cf6af 100644
--- a/registry.txt
+++ b/registry.txt
@@ -3324,3 +3324,4 @@ https://github.com/ferkoyanagi/AppFernandok.git|Contributed|App Fernando K
 https://github.com/arturo182/arduino_bbq10kbd.git|Contributed|BBQ10Keyboard
 https://github.com/RobTillaart/DS18B20_INT.git|Contributed|DS18B20_int
 https://github.com/marcinbor85/BlinkCode.git|Contributed|BlinkCode Library
+https://github.com/RobTillaart/DS1821.git|Contributed|DS1821