diff --git a/libc/tools/test_genseccomp.py b/libc/tools/test_genseccomp.py
index 8bd3517..b833c27 100755
--- a/libc/tools/test_genseccomp.py
+++ b/libc/tools/test_genseccomp.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # Unit tests for genseccomp.py
 
 import textwrap