diff --git a/src/libs/solutions/tasking/tasktree.cpp b/src/libs/solutions/tasking/tasktree.cpp
index 6930e117277..9544e356ac0 100644
--- a/src/libs/solutions/tasking/tasktree.cpp
+++ b/src/libs/solutions/tasking/tasktree.cpp
@@ -5,6 +5,7 @@
 
 #include <QEventLoop>
 #include <QFutureWatcher>
+#include <QPromise>
 #include <QSet>
 #include <QTimer>