scikit-learn
diff --git a/‎sklearn/metrics/cluster/_supervised.py
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+5Lines changed: 5 additions & 0 deletions b/‎sklearn/metrics/cluster/_supervised.py
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+5Lines changed: 5 additions & 0 deletions
diff --git a/‎sklearn/tests/test_public_functions.py
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+1Lines changed: 1 addition & 0 deletions b/‎sklearn/tests/test_public_functions.py
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@@ -1203,6 +1203,11 @@ def fowlkes_mallows_score(labels_true, labels_pred, *, sparse=False):
     return np.sqrt(tk / pk) * np.sqrt(tk / qk) if tk != 0.0 else 0.0
 
 
+@validate_params(
+    {
+        "labels": ["array-like"],
+    }
+)
 def entropy(labels):
     """Calculate the entropy for a labeling.
 
 
@@ -176,6 +176,7 @@ def _check_function_param_validation(
     "sklearn.metrics.classification_report",
     "sklearn.metrics.cluster.adjusted_mutual_info_score",
     "sklearn.metrics.cluster.contingency_matrix",
+    "sklearn.metrics.cluster.entropy",
     "sklearn.metrics.cluster.fowlkes_mallows_score",
     "sklearn.metrics.cluster.homogeneity_completeness_v_measure",
     "sklearn.metrics.cluster.normalized_mutual_info_score",