diff --git a/my_activity.py b/my_activity.py
index 1c775ffc7..77ee721e6 100755
--- a/my_activity.py
+++ b/my_activity.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env vpython
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
@@ -21,6 +21,17 @@ Example:
 # check those details to determine if there was activity in the given period.
 # This means that query time scales mostly with (today() - begin).
 
+# [VPYTHON:BEGIN]
+# wheel: <
+#   name: "infra/python/wheels/python-dateutil-py2_py3"
+#   version: "version:2.7.3"
+# >
+# wheel: <
+#   name: "infra/python/wheels/six-py2_py3"
+#   version: "version:1.10.0"
+# >
+# [VPYTHON:END]
+
 import collections
 import contextlib
 from datetime import datetime