diff --git a/build.py b/build.py
index 24cc3ad..6279cfc 100755
--- a/build.py
+++ b/build.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 import argparse
 import hashlib
 import importlib.util
diff --git a/build_base_nf.py b/build_base_nf.py
index 6ddc50c..c0d1db3 100644
--- a/build_base_nf.py
+++ b/build_base_nf.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 import json
 from os import path, remove
 from urllib.request import urlopen
diff --git a/release.py b/release.py
index 5f599ba..90f2e06 100644
--- a/release.py
+++ b/release.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 import argparse
 import os
 import re