diff --git a/registry.txt b/registry.txt
index 2820899c..f8a6a280 100644
--- a/registry.txt
+++ b/registry.txt
@@ -4150,3 +4150,4 @@ https://github.com/tig/FlashStringTable.git|Contributed|FlashStringTable
 https://github.com/solderparty/arduino_tsc2004.git|Contributed|TSC2004
 https://github.com/radariq/arduino-library.git|Contributed|RadarIQ
 https://github.com/Infineon/arduino-pas-co2-sensor.git|Contributed|pas-co2-sensor
+https://gitlab.com/riva-lab/fastIO.git|Contributed|fastIO