diff --git a/registry.txt b/registry.txt
index bdd59b3f4..1f0bd6f9e 100644
--- a/registry.txt
+++ b/registry.txt
@@ -80,7 +80,7 @@ https://github.com/arduino-libraries/Arduino_MKRIoTCarrier.git|Arduino|Arduino_M
 https://github.com/arduino-libraries/Arduino_MCHPTouch.git|Arduino|Arduino_MCHPTouch
 https://github.com/arduino-libraries/Arduino_ScienceJournal.git|Arduino|Arduino_ScienceJournal
 https://github.com/arduino-libraries/Arduino_SensorKit.git|Arduino|Arduino_Sensorkit
-https://github.com/arduino-libraries/Arduino_AVRSTL.git|Arduino|Arduino_AVRSTL
+https://github.com/arduino-libraries/Arduino_AVRSTL.git|Arduino,Retired|Arduino_AVRSTL
 https://github.com/arduino-libraries/Arduino_Portenta_OTA.git|Arduino|Arduino_Portenta_OTA
 https://github.com/arduino-libraries/Arduino_Pro_Tutorials.git|Arduino|Arduino_Pro_Tutorials
 https://github.com/arduino-libraries/Arduino_EdgeControl.git|Arduino|Arduino_EdgeControl