diff --git a/registry.txt b/registry.txt
index bdd59b3f4..80a0abdfd 100644
--- a/registry.txt
+++ b/registry.txt
@@ -72,7 +72,7 @@ https://github.com/arduino-libraries/Arduino_LSM9DS1.git|Arduino|Arduino_LSM9DS1
 https://github.com/arduino-libraries/Arduino_HTS221.git|Arduino|Arduino_HTS221
 https://github.com/arduino-libraries/Arduino_LPS22HB.git|Arduino|Arduino_LPS22HB
 https://github.com/arduino-libraries/Arduino_APDS9960.git|Arduino|Arduino_APDS9960
-https://github.com/arduino-libraries/Arduino_CRC32.git|Arduino|Arduino_CRC32
+https://github.com/arduino-libraries/Arduino_CRC32.git|Arduino,Retired|Arduino_CRC32
 https://github.com/arduino-libraries/Arduino_KNN.git|Arduino|Arduino_KNN
 https://github.com/arduino-libraries/Arduino_OV767X.git|Arduino|Arduino_OV767X
 https://github.com/arduino-libraries/Arduino_BQ24195.git|Arduino|Arduino_BQ24195