diff --git a/registry.txt b/registry.txt
index 8ca3b840..34fca27a 100644
--- a/registry.txt
+++ b/registry.txt
@@ -1847,3 +1847,4 @@ https://github.com/tiagolobao/CS5490.git|Contributed|CS5490
 https://github.com/jacobrosenthal/MergedStreams.git|Contributed|MergedStreams
 https://github.com/layadcircuits/Saleng-GSM.git|Contributed|Layad Circuits Saleng GSM Shield
 https://github.com/meganetaaan/m5stack-avatar.git|Contributed|M5Stack_Avatar
+https://github.com/muwerk/ustd.git|Contributed|Muwerk ustd library