diff --git a/pym/update/update.py b/pym/update/update.py
index 6ad3242..991e5a4 100644
--- a/pym/update/update.py
+++ b/pym/update/update.py
@@ -162,7 +162,9 @@ class Update(object):
                     tag_cr = git.getCommit(rpath, revision)
                     cr = git.getCurrentCommit(rpath)
                     ref_type = git.reference_type(rpath, revision)
-                    if tag_cr != cr or ref_type == Git.Reference.Branch:
+                    status = git.getStatusInfo(rpath)
+                    if (tag_cr != cr or ref_type == Git.Reference.Branch or
+                        not status or status['files']):
                         need_update = True
                 except GitError:
                     need_update = True