diff --git a/repositories.txt b/repositories.txt
index e1419b42..61bfaf4c 100644
--- a/repositories.txt
+++ b/repositories.txt
@@ -4398,3 +4398,9 @@ https://github.com/michaellee8/TimedState
 https://github.com/tuya/tuya-ble-mcu-sdk-arduino-library
 https://github.com/cbm80amiga/RREFont.git
 https://github.com/iotexproject/arduino-sdk
+https://github.com/sensirion/arduino-gas-index-algorithm
+https://github.com/sensirion/arduino-i2c-sdp
+https://github.com/sensirion/arduino-i2c-sgp40
+https://github.com/sensirion/arduino-i2c-sgp41
+https://github.com/sensirion/arduino-i2c-svm41
+https://github.com/sensirion/arduino-uart-svm41