--- a/mercurial/localrepo.py	Thu Feb 10 13:46:27 2011 -0600
+++ b/mercurial/localrepo.py	Thu Feb 10 13:46:27 2011 -0600
@@ -743,7 +743,7 @@
         self._branchcachetip = None
 
     def invalidate(self):
-        for a in ("changelog", "manifest"):
+        for a in ("changelog", "manifest", "_bookmarks", "_bookmarkscurrent"):
             if a in self.__dict__:
                 delattr(self, a)
         self.invalidatecaches()