From 3cfce8350ba204f0229a85907ca575e1522089d6 Mon Sep 17 00:00:00 2001
From: Jelle Spijker <jelle.spijker@ultimaker.com>
Date: Wed, 8 Nov 2023 10:13:43 +0100
Subject: [PATCH] Add missing include `optional`

---
 src/progress/Progress.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/progress/Progress.cpp b/src/progress/Progress.cpp
index 85194808b0..d0c3e9203a 100644
--- a/src/progress/Progress.cpp
+++ b/src/progress/Progress.cpp
@@ -1,9 +1,10 @@
-// Copyright (c) 2022 Ultimaker B.V.
+// Copyright (c) 2023 UltiMaker
 // CuraEngine is released under the terms of the AGPLv3 or higher
 
 #include "progress/Progress.h"
 
 #include <cassert>
+#include <optional>
 
 #include <range/v3/view/enumerate.hpp>
 #include <spdlog/spdlog.h>