diff --git a/tools/build/build.py b/tools/build/build.py
index 7b7cd734..005ddcf0 100755
--- a/tools/build/build.py
+++ b/tools/build/build.py
@@ -1,11 +1,10 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #vim: et:ts=4:sw=4:sts=4
-from __future__ import print_function
 
+import datetime
 import json
 import os
-import ox
 import re
 import shutil
 import subprocess
@@ -13,6 +12,9 @@ import sys
 import tarfile
 import time
 
+import ox
+
+
 def get_version():
     if os.path.exists('../../.git'):
         revision = subprocess.Popen(
@@ -20,9 +22,7 @@ def get_version():
         ).communicate()[0].strip().decode('utf-8')
         revision = int(revision) - 94
     else:
-        revision = subprocess.Popen(
-            ['bzr', 'revno'], stdout=subprocess.PIPE
-        ).communicate()[0].strip().decode('utf-8')
+        revision = 'x+' + datetime.datetime.now().strftime('%Y%m%d%H%M')
     return '0.1.%s' % revision
 
 def build_oxjs(downloads=False, geo=False):