diff --git a/registry.txt b/registry.txt
index 5b891328..3f8a97b4 100644
--- a/registry.txt
+++ b/registry.txt
@@ -3116,3 +3116,4 @@ https://github.com/arbv/avr-context.git|Contributed|AVR-context
 https://github.com/hideakitai/MsgPacketizer.git|Contributed|MsgPacketizer
 https://github.com/Electro707/Simple-LED-Matrix-Library.git|Contributed|Simple LED Matrix
 https://github.com/kousheekc/Kinematics.git|Contributed|Kinematics
+https://github.com/koendv/SerialWireOutput.git|Contributed|SerialWireOutput