From e01b9fb6ad10d6a143133b811019c82ec44c2ac2 Mon Sep 17 00:00:00 2001
From: Maxime Gimeno <maxime.gimeno@gmail.com>
Date: Fri, 19 Mar 2021 15:47:34 +0100
Subject: [PATCH] add missing include

---
 Classification/include/CGAL/Classification/Label_set.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Classification/include/CGAL/Classification/Label_set.h b/Classification/include/CGAL/Classification/Label_set.h
index d3e84acb4c9..cd42b34b909 100644
--- a/Classification/include/CGAL/Classification/Label_set.h
+++ b/Classification/include/CGAL/Classification/Label_set.h
@@ -19,6 +19,7 @@
 #include <CGAL/Random.h>
 
 #include <vector>
+#include <unordered_map>
 
 namespace CGAL {