diff --git a/aws-landsat/process_sat.py b/aws-landsat/process_sat.py
index f510783..4a19d94 100755
--- a/aws-landsat/process_sat.py
+++ b/aws-landsat/process_sat.py
@@ -1,3 +1,4 @@
+#!/usr/bin/python3
 import os
 import rasterio
 import numpy as np