diff --git a/pretrain/tinyllama.py b/pretrain/tinyllama.py
index 481f2fa367..81961eb433 100644
--- a/pretrain/tinyllama.py
+++ b/pretrain/tinyllama.py
@@ -107,11 +107,11 @@ def main(fabric, resume):
     optimizer = fabric.setup_optimizers(optimizer)
 
     state = {
-        "model": model, 
-        "optimizer": optimizer, 
+        "model": model,
+        "optimizer": optimizer,
         "train_dataloader": train_dataloader,
-        "hparams": hparams, 
-        "iter_num": 0, 
+        "hparams": hparams,
+        "iter_num": 0,
         "step_count": 0,
     }
 
@@ -166,8 +166,8 @@ def train(fabric, state, train_dataloader, val_dataloader, resume):
         state["iter_num"] += 1
         iter_t0 = time.perf_counter()
 
-        input_ids = train_data[:, 0:model.config.block_size].contiguous().long()
-        targets = train_data[:, 1:(model.config.block_size + 1)].contiguous().long()
+        input_ids = train_data[:, 0 : model.config.block_size].contiguous().long()
+        targets = train_data[:, 1 : (model.config.block_size + 1)].contiguous().long()
 
         is_accumulating = state["iter_num"] % gradient_accumulation_iters != 0
         with fabric.no_backward_sync(model, enabled=is_accumulating):
@@ -254,7 +254,7 @@ def validate(fabric: L.Fabric, model: nn.Module, val_dataloader: DataLoader, max
 
 
 def create_dataloaders(batch_size: int, block_size: int, num_workers: int = 8) -> Tuple[DataLoader, DataLoader]:
-    from lightning.data import StreamingDataset, CombinedStreamingDataset, StreamingDataLoader
+    from lightning.data import CombinedStreamingDataset, StreamingDataLoader, StreamingDataset
     from lightning.data.streaming.item_loader import TokensLoader
 
     # Increase by one because we need the next word as well
@@ -289,7 +289,9 @@ def create_dataloaders(batch_size: int, block_size: int, num_workers: int = 8) -
         # Consider setting to False, but we would lose some samples due to truncation when world size > 1
         drop_last=True,
     )
-    val_dataloader = DataLoader(val_dataset, batch_size=batch_size, pin_memory=True, num_workers=num_workers, drop_last=True)
+    val_dataloader = DataLoader(
+        val_dataset, batch_size=batch_size, pin_memory=True, num_workers=num_workers, drop_last=True
+    )
     return train_dataloader, val_dataloader