diff --git a/registry.txt b/registry.txt
index 5ab60d24..5136164e 100644
--- a/registry.txt
+++ b/registry.txt
@@ -3127,3 +3127,4 @@ https://github.com/SvenRosvall/SignalControl.git|Contributed|SignalControl
 https://github.com/sparkfun/SparkFun_I2C_Mux_Arduino_Library.git|Contributed|SparkFun I2C Mux Arduino Library
 https://github.com/lovyan03/LovyanGFX.git|Contributed|LovyanGFX
 https://github.com/MAINAKMONDAL98/MSMPLOTTER.git|Contributed|MSMPLOTTER
+https://github.com/emelianov/modbus-esp8266.git|Contributed|modbus-esp8266