From d876fbab69e3dbec22ae8083319c03da3677229d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A9bastien=20Loriot?= <sebastien.loriot@cgal.org>
Date: Wed, 22 Nov 2023 15:21:04 +0100
Subject: [PATCH] add missing include

---
 Stream_support/include/CGAL/IO/PLY/PLY_writer.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Stream_support/include/CGAL/IO/PLY/PLY_writer.h b/Stream_support/include/CGAL/IO/PLY/PLY_writer.h
index 36656fa7180..38028ba13ab 100644
--- a/Stream_support/include/CGAL/IO/PLY/PLY_writer.h
+++ b/Stream_support/include/CGAL/IO/PLY/PLY_writer.h
@@ -12,6 +12,7 @@
 #define CGAL_IO_PLY_PLY_WRITER_H
 
 #include <CGAL/IO/io.h>
+#include <CGAL/number_utils.h>
 
 namespace CGAL {
 namespace IO {