diff --git a/src/timeprivacy b/src/timeprivacy
index 5fd6fd7..cdd340c 100644
--- a/src/timeprivacy
+++ b/src/timeprivacy
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 ## Copyright (c) 2013, adrelanos at riseup dot net
 ## All rights reserved.
diff --git a/test/test_variable_data.sh b/test/test_variable_data.sh
index c8c9a91..01594fd 100755
--- a/test/test_variable_data.sh
+++ b/test/test_variable_data.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 
diff --git a/test/testframe.sh b/test/testframe.sh
index 22975b6..166529d 100755
--- a/test/testframe.sh
+++ b/test/testframe.sh
@@ -1,4 +1,4 @@
-#! /bin/bash
+#!/usr/bin/env bash
 #	testframe.sh DIR
 # bare-bones testing framework.
 # run the test suites in the given DIR;