diff --git a/repositories.txt b/repositories.txt
index 7ed33070..c07c7193 100644
--- a/repositories.txt
+++ b/repositories.txt
@@ -6288,3 +6288,4 @@ https://github.com/ito-soft-design/irboard_esp32
 https://github.com/m5stack/M5Cardputer
 https://github.com/arduino-libraries/Arduino_ScienceKitCarrier
 https://github.com/adafruit/Adafruit_VCNL4020
+https://gitlab.com/F-Schmidt/ulm_weatherballoon