diff --git a/repositories.txt b/repositories.txt
index faa5f2731..3f0916a5c 100644
--- a/repositories.txt
+++ b/repositories.txt
@@ -5439,6 +5439,7 @@ https://github.com/RobTillaart/DS2438
 https://github.com/RobTillaart/DS28CM00
 https://github.com/RobTillaart/DS3232
 https://github.com/RobTillaart/ellipse
+https://github.com/RobTillaart/ERCFS
 https://github.com/RobTillaart/fast_math
 https://github.com/RobTillaart/FastMap
 https://github.com/RobTillaart/FastShiftIn