diff --git a/registry.txt b/registry.txt
index b0c9de02..a520f958 100644
--- a/registry.txt
+++ b/registry.txt
@@ -7403,3 +7403,4 @@ https://github.com/CMB27/ModbusADU.git|Contributed|ModbusADU
 https://github.com/CMB27/ModbusRTUComm.git|Contributed|ModbusRTUComm
 https://github.com/Zhentao-Lin/ESP32_WS2812_Lib.git|Contributed|ESP32_WS2812_Lib
 https://github.com/stack-chan/stackchan-arduino.git|Contributed|stackchan-arduino
+https://github.com/adbancroft/avr-fast-div.git|Contributed|avr-fast-div