diff --git a/Tools/hg/hgtouch.py b/Tools/hg/hgtouch.py
index 5961a10ad02..04716917680 100644
--- a/Tools/hg/hgtouch.py
+++ b/Tools/hg/hgtouch.py
@@ -7,6 +7,7 @@ syntax of make rules.
 
 In addition to the dependency syntax, #-comments are supported.
 """
+from __future__ import with_statement
 import errno
 import os