diff --git a/dnup_virtual_sensor/virtual_soil_sensor.py b/dnup_virtual_sensor/virtual_soil_sensor.py
index f1d95cd..3e58fe3 100755
--- a/dnup_virtual_sensor/virtual_soil_sensor.py
+++ b/dnup_virtual_sensor/virtual_soil_sensor.py
@@ -1,3 +1,4 @@
+#!/usr/local/bin/python
 import logging
 
 import firebase_admin