diff --git a/update_file_lists.sh b/update_file_lists.sh
index 9c0fbdc586..1529199041 100755
--- a/update_file_lists.sh
+++ b/update_file_lists.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 # This script copies source file lists from src/Makefile.am to cmake files.