From a25cca92254c34ff82cafe38d9e591703f465cda Mon Sep 17 00:00:00 2001
From: Antoine Roy-Gobeil <antoine@plot.ly>
Date: Fri, 24 Sep 2021 17:43:22 -0400
Subject: [PATCH] dash-table: Add missing key prop on column headers

---
 components/dash-table/src/dash-table/derived/header/content.tsx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/components/dash-table/src/dash-table/derived/header/content.tsx b/components/dash-table/src/dash-table/derived/header/content.tsx
index 629b44512e..7953c71b7e 100644
--- a/components/dash-table/src/dash-table/derived/header/content.tsx
+++ b/components/dash-table/src/dash-table/derived/header/content.tsx
@@ -283,7 +283,7 @@ function getter(
                         );
 
                     return (
-                        <div>
+                        <div key={columnIndex}>
                             {!column_selectable || !selectable ? null : (
                                 <span className='column-header--select'>
                                     <input