diff --git a/bloom/git.py b/bloom/git.py
index 88dfce3d..5e03deb2 100755
--- a/bloom/git.py
+++ b/bloom/git.py
@@ -36,6 +36,7 @@
 
 import os
 import functools
+import re
 import shutil
 import subprocess
 import tempfile
@@ -686,7 +687,8 @@ def get_last_tag_by_version(directory=None):
     versions = []
     for line in output.splitlines():
         tags.append(line.strip())
-        versions.append(version.parse(line.lstrip('upstream/').strip()))
+        ver = re.match("[0-9]+.[0-9]+.[0-9]+", line)
+        versions.append(ver)
     return tags[versions.index(max(versions))] if versions else ''