--- a/tests/test-stdio.py	Tue Jan 07 14:05:51 2025 +0100
+++ b/tests/test-stdio.py	Thu Jan 30 13:51:02 2025 -0500
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 """
 Tests the buffering behavior of stdio streams in `mercurial.utils.procutil`.
 """