diff --git a/tests/test_optimizer.py b/tests/test_optimizer.py
index ae5c1dcd..752b8494 100644
--- a/tests/test_optimizer.py
+++ b/tests/test_optimizer.py
@@ -26,7 +26,6 @@
 
 from torchspec.training.optimizer import BF16Optimizer
 
-
 pytestmark = pytest.mark.skipif(
     not torch.cuda.is_available(),
     reason="fused AdamW found_inf handling requires CUDA",