From f31d41c1f280aae5030040a0d2c89d02bf4c4ba6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A9bastien=20Loriot?= <sebastien.loriot@cgal.org>
Date: Thu, 29 Jun 2023 18:08:31 +0200
Subject: [PATCH] missing include

---
 Envelope_3/include/CGAL/Env_sphere_traits_3.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Envelope_3/include/CGAL/Env_sphere_traits_3.h b/Envelope_3/include/CGAL/Env_sphere_traits_3.h
index bec2a5b72a9..2a42d07f0a0 100644
--- a/Envelope_3/include/CGAL/Env_sphere_traits_3.h
+++ b/Envelope_3/include/CGAL/Env_sphere_traits_3.h
@@ -25,6 +25,8 @@
 #include <CGAL/Envelope_3/Envelope_base.h>
 #include <CGAL/int.h>
 
+#include <memory>
+
 namespace CGAL {
 
 template <typename ConicTraits_2>