From 0139f45d59161d1e530f1f378924959eb953b350 Mon Sep 17 00:00:00 2001
From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Wed, 11 May 2022 21:04:04 -0600
Subject: [PATCH] Add a necessary include.

---
 source/matrix_free/vector_data_exchange.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/source/matrix_free/vector_data_exchange.cc b/source/matrix_free/vector_data_exchange.cc
index f4b81fba22..f30e41936f 100644
--- a/source/matrix_free/vector_data_exchange.cc
+++ b/source/matrix_free/vector_data_exchange.cc
@@ -24,6 +24,8 @@
 
 #ifdef DEAL_II_WITH_64BIT_INDICES
 #  include <deal.II/base/mpi_consensus_algorithms.templates.h>
+
+#  include <boost/serialization/utility.hpp>
 #endif
 
 #include <map>
-- 
2.39.5