diff --git a/tests/scripts/find-slow-to-highlight-files.py b/tests/scripts/find-slow-to-highlight-files.py
index 50359df2..3e94b22f 100644
--- a/tests/scripts/find-slow-to-highlight-files.py
+++ b/tests/scripts/find-slow-to-highlight-files.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # This script goes through all languages that are supported by 'bat'. For each
 # language, it loops over the correspoinding file extensions and searches a