diff --git a/registry.txt b/registry.txt
index 2d64ab9b..a5087945 100644
--- a/registry.txt
+++ b/registry.txt
@@ -2096,3 +2096,4 @@ https://github.com/stefangs/arduino-library-braccio-robot.git|Contributed|Bracci
 https://github.com/highno/rtcvars.git|Contributed|RTCVars
 https://github.com/adafruit/Adafruit_MLX90393_Library.git|Contributed|Adafruit MLX90393
 https://github.com/JoaoLopesF/ESP32MotorControl.git|Contributed|ESP32MotorControl
+https://github.com/janelia-arduino/MPR121.git|Contributed|MPR121