diff --git a/repositories.txt b/repositories.txt
index e25fc0a5..a3258b02 100644
--- a/repositories.txt
+++ b/repositories.txt
@@ -4793,3 +4793,4 @@ https://github.com/khoih-prog/Ethernet_Generic
 https://github.com/chrmlinux/ArreyExt
 https://github.com/chrmlinux/ArrayExt
 https://github.com/Pixelbo/Pelco_And_Arduino
+https://github.com/sitronlabs/SitronLabs_OPT3001_Arduino_Library