diff --git a/llmfoundry/callbacks/hf_checkpointer.py b/llmfoundry/callbacks/hf_checkpointer.py
index 63c9b9ca0d..464e1fd755 100644
--- a/llmfoundry/callbacks/hf_checkpointer.py
+++ b/llmfoundry/callbacks/hf_checkpointer.py
@@ -17,8 +17,7 @@
 from composer.loggers.remote_uploader_downloader import RemoteUploaderDownloader
 from composer.models import HuggingFaceModel
 from composer.utils import dist, format_name_with_dist_and_time, parse_uri
-from transformers import (PreTrainedModel,
-                          PreTrainedTokenizerBase)
+from transformers import PreTrainedModel, PreTrainedTokenizerBase
 
 from llmfoundry.models.mpt import MPTConfig, MPTForCausalLM
 from llmfoundry.utils.huggingface_hub_utils import \
@@ -73,7 +72,9 @@ def __init__(
             if mlflow_logging_config is None:
                 mlflow_logging_config = {}
             if 'metadata' not in mlflow_logging_config:
-                mlflow_logging_config['metadata'] = {'task': 'llm/v1/completions'}
+                mlflow_logging_config['metadata'] = {
+                    'task': 'llm/v1/completions'
+                }
             if 'task' not in mlflow_logging_config:
                 mlflow_logging_config['task'] = 'text-generation'
         self.mlflow_logging_config = mlflow_logging_config