diff --git a/install/script/setup.sh b/install/script/setup.sh
index 283df16..38b5f62 100755
--- a/install/script/setup.sh
+++ b/install/script/setup.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 . ./trace.sh
 . ./configure.sh
diff --git a/setup.sh b/setup.sh
index 3d88e55..1018ba4 100755
--- a/setup.sh
+++ b/setup.sh
@@ -1,3 +1,3 @@
-#!/bin/sh
+#!/bin/bash
 
 (cd install/script && TRACING=1 ./setup.sh $@)
\ No newline at end of file