diff --git a/pyproject.toml b/pyproject.toml
index 101cfb7a..88814539 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -71,8 +71,8 @@ tutorials = [
     "jupyter",
     "seaborn",
     "matplotlib",
-    "datasets>=2.8.0,
-    "scikit-learn">=1.1.0,
+    "datasets>=2.8.0",
+    "scikit-learn>=1.1.0",
 ]
 
 [project.readme]
diff --git a/src/textdescriptives/sklearn_featurizer.py b/src/textdescriptives/sklearn_featurizer.py
index aea5f841..16d2233f 100644
--- a/src/textdescriptives/sklearn_featurizer.py
+++ b/src/textdescriptives/sklearn_featurizer.py
@@ -1,6 +1,5 @@
 from typing import Iterable, List, Optional
 
-import numpy as np
 import pandas as pd
 from sklearn.base import BaseEstimator, TransformerMixin
 from wasabi import msg
@@ -106,5 +105,3 @@ def get_feature_names_out(self, input_features=None) -> List[str]:
         """Get the names of the extracted features. input_features is only
         present for API compatibility with sklearn."""
         return self.feature_names
-
-