diff --git a/reasoning_gym/cognition/rubiks_cube.py b/reasoning_gym/cognition/rubiks_cube.py
index b82e4882..e2cbf4e1 100644
--- a/reasoning_gym/cognition/rubiks_cube.py
+++ b/reasoning_gym/cognition/rubiks_cube.py
@@ -1,16 +1,12 @@
 from dataclasses import dataclass
 import random
 import re
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 from magiccube.cube import Cube
 from magiccube.solver.basic.basic_solver import BasicSolver
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 from typing import List, Optional, Tuple, Dict
 
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 from ..factory import ProceduralDataset, register_dataset
 
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 @dataclass
 class RubiksCubeConfig:
     """Configuration for RubiksCube task generation"""
diff --git a/tests/test_rubikscube.py b/tests/test_rubikscube.py
index d6431442..a49e877d 100644
--- a/tests/test_rubikscube.py
+++ b/tests/test_rubikscube.py
@@ -39,7 +39,3 @@ def test_rubikscube_items():
         assert dataset.score_answer(answer=item['metadata']['example_correct_answer'], entry=item) == 1.0
         assert dataset.score_answer(answer='R', entry=item) == 0.01
         assert dataset.score_answer(answer=None, entry=item) == 0.0
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-
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