diff --git a/src/avalanche/test/processor_tests.cpp b/src/avalanche/test/processor_tests.cpp
--- a/src/avalanche/test/processor_tests.cpp
+++ b/src/avalanche/test/processor_tests.cpp
@@ -25,6 +25,9 @@
 #include <boost/mpl/list.hpp>
 #include <boost/test/unit_test.hpp>
 
+#include <functional>
+#include <vector>
+
 using namespace avalanche;
 
 namespace avalanche {
diff --git a/src/httprpc.cpp b/src/httprpc.cpp
--- a/src/httprpc.cpp
+++ b/src/httprpc.cpp
@@ -18,6 +18,7 @@
 
 #include <algorithm>
 #include <cstdio>
+#include <functional>
 #include <iterator>
 #include <map>
 #include <memory>
diff --git a/src/index/base.cpp b/src/index/base.cpp
--- a/src/index/base.cpp
+++ b/src/index/base.cpp
@@ -15,6 +15,8 @@
 #include <validation.h>
 #include <warnings.h>
 
+#include <functional>
+
 constexpr char DB_BEST_BLOCK = 'B';
 
 constexpr int64_t SYNC_LOG_INTERVAL = 30;           // seconds
diff --git a/src/net.cpp b/src/net.cpp
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -47,6 +47,7 @@
 #include <algorithm>
 #include <cmath>
 #include <cstdint>
+#include <functional>
 #include <limits>
 #include <optional>
 #include <unordered_map>
diff --git a/src/qt/bitcoingui.cpp b/src/qt/bitcoingui.cpp
--- a/src/qt/bitcoingui.cpp
+++ b/src/qt/bitcoingui.cpp
@@ -36,6 +36,7 @@
 #include <util/translation.h>
 #include <validation.h>
 
+#include <functional>
 #include <memory>
 
 #include <QAction>
diff --git a/src/qt/clientmodel.cpp b/src/qt/clientmodel.cpp
--- a/src/qt/clientmodel.cpp
+++ b/src/qt/clientmodel.cpp
@@ -24,6 +24,7 @@
 #include <QTimer>
 
 #include <cstdint>
+#include <functional>
 
 static int64_t nLastHeaderTipUpdateNotification = 0;
 static int64_t nLastBlockTipUpdateNotification = 0;
diff --git a/src/qt/splashscreen.cpp b/src/qt/splashscreen.cpp
--- a/src/qt/splashscreen.cpp
+++ b/src/qt/splashscreen.cpp
@@ -18,6 +18,8 @@
 #include <util/system.h>
 #include <util/translation.h>
 
+#include <functional>
+
 #include <QApplication>
 #include <QCloseEvent>
 #include <QPainter>
diff --git a/src/qt/transactiontablemodel.cpp b/src/qt/transactiontablemodel.cpp
--- a/src/qt/transactiontablemodel.cpp
+++ b/src/qt/transactiontablemodel.cpp
@@ -18,6 +18,7 @@
 #include <uint256.h>
 
 #include <algorithm>
+#include <functional>
 
 #include <QColor>
 #include <QDateTime>
diff --git a/src/qt/walletmodel.cpp b/src/qt/walletmodel.cpp
--- a/src/qt/walletmodel.cpp
+++ b/src/qt/walletmodel.cpp
@@ -26,6 +26,7 @@
 #include <QTimer>
 
 #include <cstdint>
+#include <functional>
 
 WalletModel::WalletModel(std::unique_ptr<interfaces::Wallet> wallet,
                          ClientModel &client_model,
diff --git a/src/scheduler.cpp b/src/scheduler.cpp
--- a/src/scheduler.cpp
+++ b/src/scheduler.cpp
@@ -7,6 +7,7 @@
 #include <random.h>
 
 #include <cassert>
+#include <functional>
 #include <utility>
 
 CScheduler::CScheduler() {}
diff --git a/src/test/scheduler_tests.cpp b/src/test/scheduler_tests.cpp
--- a/src/test/scheduler_tests.cpp
+++ b/src/test/scheduler_tests.cpp
@@ -12,6 +12,7 @@
 
 #include <atomic>
 #include <condition_variable>
+#include <functional>
 #include <mutex>
 #include <thread>
 #include <vector>
diff --git a/src/torcontrol.cpp b/src/torcontrol.cpp
--- a/src/torcontrol.cpp
+++ b/src/torcontrol.cpp
@@ -28,6 +28,7 @@
 
 #include <cstdlib>
 #include <deque>
+#include <functional>
 #include <set>
 #include <vector>