diff --git a/tests/scripts/task_python_topi.sh b/tests/scripts/task_python_topi.sh
index 58c4d18cdc31..f0548f14995e 100755
--- a/tests/scripts/task_python_topi.sh
+++ b/tests/scripts/task_python_topi.sh
@@ -1,3 +1,5 @@
+#!/bin/bash
+
 set -e
 set -u