diff --git a/pysr/regressor_sequence.py b/pysr/regressor_sequence.py
index 7988c7ce9..321f35ea0 100644
--- a/pysr/regressor_sequence.py
+++ b/pysr/regressor_sequence.py
@@ -2,6 +2,7 @@
 
 import numpy as np
 from sklearn.base import BaseEstimator
+
 from .sr import PySRRegressor
 from .utils import ArrayLike