diff --git a/examples/example_postprocess.py b/examples/example_postprocess.py
index 069fb6e..057ea30 100755
--- a/examples/example_postprocess.py
+++ b/examples/example_postprocess.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 import fileinput
 import random
 import sys
diff --git a/tests/test_xkcdpass.py b/tests/test_xkcdpass.py
index 88579fd..6821d1f 100755
--- a/tests/test_xkcdpass.py
+++ b/tests/test_xkcdpass.py
@@ -50,7 +50,7 @@ class XkcdPasswordTests(unittest.TestCase):
     def test_separator(self):
         count = 3
         result = subprocess.check_output(
-            ["python", "xkcdpass/xkcd_password.py",
+            ["python3", "xkcdpass/xkcd_password.py",
              "--count", str(count),
              "--delimiter", "|",
              "--separator", " "])
@@ -60,7 +60,7 @@ class XkcdPasswordTests(unittest.TestCase):
         "Pipe output to other program. e.g. `xkcdpass -c 1 -s "" | xsel -b`"
         count = 1
         result = subprocess.check_output(
-            ["python", "xkcdpass/xkcd_password.py",
+            ["python3", "xkcdpass/xkcd_password.py",
              "--count", str(count),
              "--separator", ""])
         self.assertEqual(result.find(b"\n"), -1)
diff --git a/xkcdpass/xkcd_password.py b/xkcdpass/xkcd_password.py
index 78b0b69..07cc7b6 100755
--- a/xkcdpass/xkcd_password.py
+++ b/xkcdpass/xkcd_password.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # encoding: utf-8
 
 from __future__ import print_function