diff --git a/tests/auto/solutions/qprocesstask/testsleep/main.cpp b/tests/auto/solutions/qprocesstask/testsleep/main.cpp
index cfe8752e02a..0c928a31900 100644
--- a/tests/auto/solutions/qprocesstask/testsleep/main.cpp
+++ b/tests/auto/solutions/qprocesstask/testsleep/main.cpp
@@ -1,6 +1,7 @@
 // Copyright (C) 2023 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
 
+#include <chrono>
 #include <thread>
 
 using namespace std;