diff --git a/.github/matrix.py b/.github/matrix.py
old mode 100644
new mode 100755
index 473524848..cfef53c9e
--- a/.github/matrix.py
+++ b/.github/matrix.py
@@ -1,3 +1,5 @@
+#!/usr/bin/python3
+
 # Copyright 2019 Ilya Shipitsin <chipitsine@gmail.com>
 # Copyright 2020 Tim Duesterhus <tim@bastelstu.be>
 #