diff --git a/test/e2e-tests.sh b/test/e2e-tests.sh
index 10797079551..56f8060681e 100755
--- a/test/e2e-tests.sh
+++ b/test/e2e-tests.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2019 The Knative Authors
 #