diff --git a/registry.txt b/registry.txt
index f2c6c30f..8dacd675 100644
--- a/registry.txt
+++ b/registry.txt
@@ -1680,3 +1680,4 @@ https://github.com/toxnico/DMStepper.git|Contributed|DMStepper
 https://github.com/kosme/timestamp32bits.git|Contributed|timestamp32bits
 https://github.com/jaean123/SnappyXO-PreciseMovement-library.git|Contributed|SnappyXO-PreciseMovement-library
 https://github.com/goncalomb/KeyMatrix.git|Contributed|KeyMatrix
+https://github.com/end2endzone/NonBlockingRTTTL.git|Contributed|NonBlockingRTTTL