From 6a67ca5719a4336e744d477c5d016b36ac237ed6 Mon Sep 17 00:00:00 2001
From: kiwoong <rldnddbs@naver.com>
Date: Sat, 22 Aug 2026 00:19:40 +0900
Subject: [PATCH] GitContribute issue #439

---
 tslearn/clustering/kshape.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tslearn/clustering/kshape.py b/tslearn/clustering/kshape.py
index 1f457a54d..82c5cae17 100644
--- a/tslearn/clustering/kshape.py
+++ b/tslearn/clustering/kshape.py
@@ -77,6 +77,8 @@ class KShape(TimeSeriesCentroidBasedClusteringMixin,
     Notes
     -----
         This method requires a dataset of equal-sized time series.
+        The time series must be z-normalized, for example with
+        :class:`~tslearn.preprocessing.TimeSeriesScalerMeanVariance`.
 
     Examples
     --------