diff --git a/repositories.txt b/repositories.txt
index 32f3a94b..fec3a08c 100644
--- a/repositories.txt
+++ b/repositories.txt
@@ -2414,6 +2414,7 @@ https://github.com/neu-rah/ArduinoMenu
 https://github.com/neu-rah/Dump
 https://github.com/newdigate/teensy-variable-playback
 https://github.com/newdigate/teensy-sample-flashloader
+https://github.com/newdigate/teensy-polyphony
 https://github.com/NHBSystems/NHB_AD7794
 https://github.com/niccokunzmann/UC121902-TNARX-A
 https://github.com/NicholasBerryman/GenericMotorDriver