diff --git a/registry.txt b/registry.txt
index 61285385..5b964883 100644
--- a/registry.txt
+++ b/registry.txt
@@ -2111,3 +2111,4 @@ https://github.com/SV-Zanshin/BME680.git|Contributed|BME680
 https://github.com/LoganTraceur/LogansGreatButton.git|Contributed|LogansGreatButton
 https://github.com/MicroGamerConsole/MicroGamer-Arduino.git|Contributed|MicroGamer
 https://github.com/SV-Zanshin/DS1631.git|Contributed|DS1631
+https://github.com/SV-Zanshin/DS3231M.git|Contributed|DS3231M