diff --git a/codereview/__init__.py b/codereview/__init__.py
index d991afa..8221688 100644
--- a/codereview/__init__.py
+++ b/codereview/__init__.py
@@ -1 +1 @@
-__version__ = 'v1.0-69-gd1f8508c'
+__version__ = 'v1.0-99-g9cd3ea2f'
diff --git a/codereview/upload_bundle_pb2.py b/codereview/upload_bundle_pb2.py
index 48c3651..7cf2f86 100644
--- a/codereview/upload_bundle_pb2.py
+++ b/codereview/upload_bundle_pb2.py
@@ -27,30 +27,67 @@
       options=None,
       type=None),
     descriptor.EnumValueDescriptor(
-      name='UNKNOWN_PROJECT', index=3, number=2,
+      name='UNKNOWN_CHANGE', index=3, number=9,
       options=None,
       type=None),
     descriptor.EnumValueDescriptor(
-      name='UNKNOWN_BRANCH', index=4, number=3,
+      name='CHANGE_CLOSED', index=4, number=10,
       options=None,
       type=None),
     descriptor.EnumValueDescriptor(
-      name='UNKNOWN_BUNDLE', index=5, number=5,
+      name='UNKNOWN_PROJECT', index=5, number=2,
       options=None,
       type=None),
     descriptor.EnumValueDescriptor(
-      name='NOT_BUNDLE_OWNER', index=6, number=6,
+      name='UNKNOWN_BRANCH', index=6, number=3,
       options=None,
       type=None),
     descriptor.EnumValueDescriptor(
-      name='BUNDLE_CLOSED', index=7, number=8,
+      name='UNKNOWN_BUNDLE', index=7, number=5,
       options=None,
       type=None),
+    descriptor.EnumValueDescriptor(
+      name='NOT_BUNDLE_OWNER', index=8, number=6,
+      options=None,
+      type=None),
+    descriptor.EnumValueDescriptor(
+      name='BUNDLE_CLOSED', index=9, number=8,
+      options=None,
+      type=None),
   ],
   options=None,
 )
 
 
+_REPLACEPATCHSET = descriptor.Descriptor(
+  name='ReplacePatchSet',
+  full_name='codereview.ReplacePatchSet',
+  filename='upload_bundle.proto',
+  containing_type=None,
+  fields=[
+    descriptor.FieldDescriptor(
+      name='change_id', full_name='codereview.ReplacePatchSet.change_id', index=0,
+      number=1, type=9, cpp_type=9, label=2,
+      default_value=unicode("", "utf-8"),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    descriptor.FieldDescriptor(
+      name='object_id', full_name='codereview.ReplacePatchSet.object_id', index=1,
+      number=2, type=9, cpp_type=9, label=2,
+      default_value=unicode("", "utf-8"),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],  # TODO(robinson): Implement.
+  enum_types=[
+  ],
+  options=None)
+
+
 _UPLOADBUNDLEREQUEST = descriptor.Descriptor(
   name='UploadBundleRequest',
   full_name='codereview.UploadBundleRequest',
@@ -92,6 +129,13 @@
       message_type=None, enum_type=None, containing_type=None,
       is_extension=False, extension_scope=None,
       options=None),
+    descriptor.FieldDescriptor(
+      name='replace', full_name='codereview.UploadBundleRequest.replace', index=5,
+      number=2, type=11, cpp_type=10, label=3,
+      default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
   ],
   extensions=[
   ],
@@ -174,8 +218,13 @@
   options=None)
 
 
+_UPLOADBUNDLEREQUEST.fields_by_name['replace'].message_type = _REPLACEPATCHSET
 _UPLOADBUNDLERESPONSE.fields_by_name['status_code'].enum_type = _UPLOADBUNDLERESPONSE_CODETYPE
 
+class ReplacePatchSet(message.Message):
+  __metaclass__ = reflection.GeneratedProtocolMessageType
+  DESCRIPTOR = _REPLACEPATCHSET
+
 class UploadBundleRequest(message.Message):
   __metaclass__ = reflection.GeneratedProtocolMessageType
   DESCRIPTOR = _UPLOADBUNDLEREQUEST