diff --git a/balsam/_api/models.py b/balsam/_api/models.py
index 71fe38aa..02f777e1 100644
--- a/balsam/_api/models.py
+++ b/balsam/_api/models.py
@@ -1,5 +1,5 @@
-# This file was auto-generated via /Users/misha/workflow/balsam/.venv/bin/python balsam/schemas/api_generator.py
-# [git rev 2e64e31]
+# This file was auto-generated via /home/misha/balsam/.venv/bin/python balsam/schemas/api_generator.py
+# [git rev 46088d4]
 # Do *not* make changes to the API by changing this file!
 
 import datetime
@@ -765,7 +765,7 @@ class BatchJob(balsam._api.bases.BatchJobBase):
     job_mode = Field[balsam.schemas.batchjob.JobMode]()
     optional_params = Field[typing.Dict[str, str]]()
     filter_tags = Field[typing.Dict[str, str]]()
-    partitions = Field[typing.Optional[typing.List[balsam.schemas.batchjob.BatchJobPartition]]]()
+    partitions = Field[Optional[typing.Union[typing.List[balsam.schemas.batchjob.BatchJobPartition], None]]]()
     site_id = Field[int]()
     project = Field[str]()
     queue = Field[str]()
@@ -786,7 +786,7 @@ def __init__(
         queue: str,
         optional_params: Optional[typing.Dict[str, str]] = None,
         filter_tags: Optional[typing.Dict[str, str]] = None,
-        partitions: Optional[typing.Optional[typing.List[balsam.schemas.batchjob.BatchJobPartition]]] = None,
+        partitions: Optional[typing.Union[typing.List[balsam.schemas.batchjob.BatchJobPartition], None]] = None,
         **kwargs: Any,
     ) -> None:
         """
@@ -918,7 +918,7 @@ def create(
         queue: str,
         optional_params: Optional[typing.Dict[str, str]] = None,
         filter_tags: Optional[typing.Dict[str, str]] = None,
-        partitions: Optional[typing.Optional[typing.List[balsam.schemas.batchjob.BatchJobPartition]]] = None,
+        partitions: Optional[typing.Union[typing.List[balsam.schemas.batchjob.BatchJobPartition], None]] = None,
     ) -> BatchJob:
         """
         Create a new BatchJob object and save it to the API in one step.
diff --git a/balsam/site/service/transfer.py b/balsam/site/service/transfer.py
index 8b574b16..8219d857 100644
--- a/balsam/site/service/transfer.py
+++ b/balsam/site/service/transfer.py
@@ -3,7 +3,7 @@
 from itertools import islice
 from math import ceil
 from pathlib import Path
-from typing import TYPE_CHECKING, Any, Dict, Iterable, List, Tuple, cast
+from typing import TYPE_CHECKING, Any, Dict, Iterable, List, Tuple, cast, DefaultDict
 from urllib.parse import urlparse
 
 from balsam.platform.transfer import TaskInfo, TransferInterface, TransferRetryableError, TransferSubmitError
@@ -57,7 +57,7 @@ def __init__(
         self.num_items_query_limit = num_items_query_limit
 
     @staticmethod
-    def build_task_map(transfer_items: Iterable["TransferItem"]) -> "defaultdict[str, List[TransferItem]]":
+    def build_task_map(transfer_items: Iterable["TransferItem"]) -> "DefaultDict[str, List[TransferItem]]":
         task_map = defaultdict(list)
         for item in transfer_items:
             task_map[item.task_id].append(item)