diff --git a/utils/lit/TestRunner.py b/utils/lit/TestRunner.py
index 5c1e8ea..3e4b2c6 100644
--- a/utils/lit/TestRunner.py
+++ b/utils/lit/TestRunner.py
@@ -213,7 +213,7 @@
             print >>sys.stdout
             return '', '', 0
 
-        command = ['/bin/sh', script]
+        command = ['/bin/bash', script]
         out,err,exitCode = executeCommand(command, cwd=cwd,
                                           env=test.config.environment)