diff --git a/tools/travis_setup.sh b/tools/travis_setup.sh
index 6ab65da3..4678dafa 100755
--- a/tools/travis_setup.sh
+++ b/tools/travis_setup.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/bash
 set -ex
 
 pip install wheel flake8 coveralls nose
diff --git a/tools/travis_test.sh b/tools/travis_test.sh
index 1a3a9a59..a309a32d 100755
--- a/tools/travis_test.sh
+++ b/tools/travis_test.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/bash
 set -ex
 
 tools/header.py "Run all tests with minimum dependencies"