diff --git a/scripts/create_manifest.py b/scripts/create_manifest.py
old mode 100644
new mode 100755
index 5bbe604..ced3bfc
--- a/scripts/create_manifest.py
+++ b/scripts/create_manifest.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 import argparse
 import bz2
 import json
diff --git a/scripts/filter_manifest.py b/scripts/filter_manifest.py
old mode 100644
new mode 100755
index e84b347..deb02b7
--- a/scripts/filter_manifest.py
+++ b/scripts/filter_manifest.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 import argparse
 from pprint import pprint
 import json
diff --git a/scripts/ls_manifest.py b/scripts/ls_manifest.py
old mode 100644
new mode 100755
index 4b4e99f..1d166f3
--- a/scripts/ls_manifest.py
+++ b/scripts/ls_manifest.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 import argparse
 from pprint import pprint
 import json
diff --git a/scripts/run_tests.py b/scripts/run_tests.py
index 5c8db0a..17f44a7 100755
--- a/scripts/run_tests.py
+++ b/scripts/run_tests.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 import argparse
 from collections import namedtuple
 import dxpy
diff --git a/scripts/split_manifest.py b/scripts/split_manifest.py
old mode 100644
new mode 100755
index 361e538..63c2b7c
--- a/scripts/split_manifest.py
+++ b/scripts/split_manifest.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 import argparse
 from pprint import pprint
 import json