diff --git a/Run-Tests.sh b/Run-Tests.sh
index 76e8a10..909fb63 100755
--- a/Run-Tests.sh
+++ b/Run-Tests.sh
@@ -1,4 +1,4 @@
-#!/bin/sh -ex
+#!/bin/bash -ex
 
 TARGET="GCDWebServer (Mac)"
 CONFIGURATION="Release"