diff --git a/tools/build/build.py b/tools/build/build.py
index 416b2d4a..2db7696c 100755
--- a/tools/build/build.py
+++ b/tools/build/build.py
@@ -12,6 +12,20 @@ import sys
 import tarfile
 import time
 
+def get_version():
+    if os.path.exists('../../.git'):
+        revision = subprocess.Popen(
+            ['git', 'rev-list', 'HEAD', '--count'], stdout=subprocess.PIPE
+        ).communicate()[0].strip()
+        print revision
+        revision = int(revision) - 118
+        print revision
+    else:
+        revision = subprocess.Popen(
+            ['bzr', 'revno'], stdout=subprocess.PIPE
+        ).communicate()[0].strip()
+    return '0.1.%s' % revision
+
 def build_oxjs(downloads=False, geo=False):
 
     base_path = os.path.dirname(__file__)
@@ -24,10 +38,7 @@ def build_oxjs(downloads=False, geo=False):
     dev_path = root_path + 'dev/'
 
     locales = {}
-    version = '0.1.%s' % subprocess.Popen(
-        ['bzr', 'revno'],
-        stdout=subprocess.PIPE
-    ).communicate()[0].strip()
+    version = get_version()
     year = time.strftime('%Y', time.gmtime())
     comment = ' OxJS %s (c) %s 0x2620, dual-licensed GPL/MIT, see https://oxjs.org for details ' % (version, year)