Update copyright lines with new year.

[simgrid.git] / include / xbt / utility.hpp

diff --git a/include/xbt/utility.hpp b/include/xbt/utility.hpp
index ea36639..c39cf85 100644 (file)
--- a/include/xbt/utility.hpp
+++ b/include/xbt/utility.hpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2016-2019. The SimGrid Team.
+/* Copyright (c) 2016-2020. The SimGrid Team.
  * All rights reserved.                                                     */
 
 /* This program is free software; you can redistribute it and/or modify it
@@ -8,6 +8,7 @@
 #define XBT_UTILITY_HPP
 
 #include <tuple>
+#include <functional>
 
 namespace simgrid {
 namespace xbt {