--- a/Allura/allura/model/__init__.py
+++ b/Allura/allura/model/__init__.py
@@ -11,7 +11,7 @@
 from .openid_model import OpenIdStore, OpenIdAssociation, OpenIdNonce
 from .filesystem import File
 from .notification import Notification, Mailbox
-from .repository import Repository, RepositoryImplementation, RepoObject, Commit, Tree, Blob, CommitAncestor, Manifest
+from .repository import Repository, RepositoryImplementation, RepoObject, Commit, Tree, Blob
 from .repository import LogCache, LastCommitFor, MergeRequest, GitLikeTree
 from .stats import Stats
 from .oauth import OAuthToken, OAuthConsumerToken, OAuthRequestToken, OAuthAccessToken