diff --git a/tests/gen-libdfp-tests.py b/tests/gen-libdfp-tests.py
index 52ecf7d..9083e13 100755
--- a/tests/gen-libdfp-tests.py
+++ b/tests/gen-libdfp-tests.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import sys
 import re
diff --git a/tests/gen-libdfp-ulps.py b/tests/gen-libdfp-ulps.py
index 55dae23..b3e40da 100755
--- a/tests/gen-libdfp-ulps.py
+++ b/tests/gen-libdfp-ulps.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import sys
 import os