diff --git a/testconf.sh.in b/testconf.sh.in
index 6e6b929..4915fe3 100755
--- a/testconf.sh.in
+++ b/testconf.sh.in
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # =====================================================================
 # Test ctools configuration script (used for continuous integration;
 # assumes that ctools have been installed)