diff --git a/repositories.txt b/repositories.txt
index d595d49e..78cbc4c5 100644
--- a/repositories.txt
+++ b/repositories.txt
@@ -4933,3 +4933,4 @@ https://github.com/levkovigor/FastInterruptEncoder
 https://github.com/nfhktwrbq/LedMatrix8x8.git
 https://github.com/Energesis-Ingenieria/Energesis_Sensor
 https://github.com/Energesis-Ingenieria/Energesis_LM35
+https://github.com/vgroenhuis/PneumaticStepper