diff --git a/CMakeLists.txt b/CMakeLists.txt
index 34fbfd37d..d6e8de7c2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -186,6 +186,7 @@ include_directories("${CMAKE_CURRENT_BINARY_DIR}")
 
 add_definitions(-DQT_DISABLE_DEPRECATED_BEFORE=0x050f00)
 add_definitions(-DKF_DISABLE_DEPRECATED_BEFORE_AND_AT=0x055800)
+add_definitions(-DKITEMMODELS_DISABLE_DEPRECATED_BEFORE_AND_AT=0x054F00)
 
 configure_file(config-workspace.h.cmake ${CMAKE_CURRENT_BINARY_DIR}/config-workspace.h)
 configure_file(config-unix.h.cmake ${CMAKE_CURRENT_BINARY_DIR}/config-unix.h )
diff --git a/applets/kicker/plugin/computermodel.cpp b/applets/kicker/plugin/computermodel.cpp
index dc21976c4..f4bf75cc6 100644
--- a/applets/kicker/plugin/computermodel.cpp
+++ b/applets/kicker/plugin/computermodel.cpp
@@ -12,10 +12,10 @@
 #include <QIcon>
 
 #include <KAuthorized>
+#include <KConcatenateRowsProxyModel>
 #include <KFilePlacesModel>
 #include <KIO/OpenUrlJob>
 #include <KLocalizedString>
-#include <QConcatenateTablesProxyModel>
 #include <Solid/Device>
 
 #include "krunner_interface.h"
@@ -123,7 +123,7 @@ Q_INVOKABLE bool RunCommandModel::trigger(int row, const QString &actionId, cons
 
 ComputerModel::ComputerModel(QObject *parent)
     : ForwardingModel(parent)
-    , m_concatProxy(new QConcatenateTablesProxyModel(this))
+    , m_concatProxy(new KConcatenateRowsProxyModel(this))
     , m_runCommandModel(new RunCommandModel(this))
     , m_systemAppsModel(new SimpleFavoritesModel(this))
     , m_filteredPlacesModel(new FilteredPlacesModel(this))
diff --git a/applets/kicker/plugin/computermodel.h b/applets/kicker/plugin/computermodel.h
index 0c52f0a94..c25297e14 100644
--- a/applets/kicker/plugin/computermodel.h
+++ b/applets/kicker/plugin/computermodel.h
@@ -14,7 +14,7 @@
 
 class SimpleFavoritesModel;
 
-class QConcatenateTablesProxyModel;
+class KConcatenateRowsProxyModel;
 class KFilePlacesModel;
 
 namespace Solid
@@ -95,7 +95,7 @@ private Q_SLOTS:
     void onSetupDone(Solid::ErrorType error, QVariant errorData, const QString &udi);
 
 private:
-    QConcatenateTablesProxyModel *m_concatProxy;
+    KConcatenateRowsProxyModel *m_concatProxy;
     RunCommandModel *m_runCommandModel;
     SimpleFavoritesModel *m_systemAppsModel;
     FilteredPlacesModel *m_filteredPlacesModel;
diff --git a/libnotificationmanager/notifications.cpp b/libnotificationmanager/notifications.cpp
index 0e01502d7..563a45e77 100644
--- a/libnotificationmanager/notifications.cpp
+++ b/libnotificationmanager/notifications.cpp
@@ -6,11 +6,11 @@
 
 #include "notifications.h"
 
-#include <QConcatenateTablesProxyModel>
 #include <QDebug>
 #include <QMetaEnum>
 #include <QSharedPointer>
 
+#include <KConcatenateRowsProxyModel>
 #include <KDescendantsProxyModel>
 
 #include "limitedrowcountproxymodel_p.h"
@@ -67,7 +67,7 @@ public:
     JobsModel::Ptr jobsModel;
     QSharedPointer<Settings> settings() const;
 
-    QConcatenateTablesProxyModel *notificationsAndJobsModel = nullptr;
+    KConcatenateRowsProxyModel *notificationsAndJobsModel = nullptr;
 
     NotificationFilterProxyModel *filterModel = nullptr;
     NotificationSortProxyModel *sortModel = nullptr;
@@ -125,7 +125,7 @@ void Notifications::Private::initProxyModels()
      * NotificationsModel      JobsModel
      *        \\                 /
      *         \\               /
-     *     QConcatenateTablesProxyModel
+     *     KConcatenateRowsProxyModel
      *               |||
      *               |||
      *     NotificationFilterProxyModel
@@ -158,7 +158,7 @@ void Notifications::Private::initProxyModels()
      */
 
     if (!notificationsAndJobsModel) {
-        notificationsAndJobsModel = new QConcatenateTablesProxyModel(q);
+        notificationsAndJobsModel = new KConcatenateRowsProxyModel(q);
     }
 
     if (!filterModel) {
@@ -344,8 +344,8 @@ QModelIndex Notifications::Private::mapFromModel(const QModelIndex &idx) const
                     found = true;
                     break;
                 }
-            } else if (auto *concatenateModel = qobject_cast<QConcatenateTablesProxyModel *>(model)) {
-                // There's no "sourceModels()" on QConcatenateTablesProxyModel
+            } else if (auto *concatenateModel = qobject_cast<KConcatenateRowsProxyModel *>(model)) {
+                // There's no "sourceModels()" on KConcatenateRowsProxyModel
                 if (idxModel == notificationsModel.data() || idxModel == jobsModel.data()) {
                     resolvedIdx = concatenateModel->mapFromSource(resolvedIdx);
                     found = true;
diff --git a/libnotificationmanager/utils.cpp b/libnotificationmanager/utils.cpp
index c28effba9..d39b65313 100644
--- a/libnotificationmanager/utils.cpp
+++ b/libnotificationmanager/utils.cpp
@@ -10,7 +10,6 @@
 
 #include <QAbstractItemModel>
 #include <QAbstractProxyModel>
-#include <QConcatenateTablesProxyModel>
 #include <QCoreApplication>
 #include <QDBusConnection>
 #include <QDBusConnectionInterface>
@@ -20,6 +19,8 @@
 #include <QSettings>
 #include <QTextStream>
 
+#include <KConcatenateRowsProxyModel>
+
 #include <KProcessList>
 
 using namespace NotificationManager;
@@ -108,8 +109,8 @@ QModelIndex Utils::mapToModel(const QModelIndex &idx, const QAbstractItemModel *
     while (resolvedIdx.isValid() && resolvedIdx.model() != sourceModel) {
         if (auto *proxyModel = qobject_cast<const QAbstractProxyModel *>(resolvedIdx.model())) {
             resolvedIdx = proxyModel->mapToSource(resolvedIdx);
-            // QConcatenateTablesProxyModel isn't a "real" proxy model, so we need to special case for it :(
-        } else if (auto *concatenateModel = qobject_cast<const QConcatenateTablesProxyModel *>(resolvedIdx.model())) {
+            // KConcatenateRowsProxyModel isn't a "real" proxy model, so we need to special case for it :(
+        } else if (auto *concatenateModel = qobject_cast<const KConcatenateRowsProxyModel *>(resolvedIdx.model())) {
             resolvedIdx = concatenateModel->mapToSource(resolvedIdx);
         } else {
             if (resolvedIdx.model() != sourceModel) {
diff --git a/libtaskmanager/concatenatetasksproxymodel.cpp b/libtaskmanager/concatenatetasksproxymodel.cpp
index 4a68cf344..6f5e6e6ee 100644
--- a/libtaskmanager/concatenatetasksproxymodel.cpp
+++ b/libtaskmanager/concatenatetasksproxymodel.cpp
@@ -9,7 +9,7 @@
 namespace TaskManager
 {
 ConcatenateTasksProxyModel::ConcatenateTasksProxyModel(QObject *parent)
-    : QConcatenateTablesProxyModel(parent)
+    : KConcatenateRowsProxyModel(parent)
 {
 }
 
diff --git a/libtaskmanager/concatenatetasksproxymodel.h b/libtaskmanager/concatenatetasksproxymodel.h
index 3f395df78..7b74defa4 100644
--- a/libtaskmanager/concatenatetasksproxymodel.h
+++ b/libtaskmanager/concatenatetasksproxymodel.h
@@ -8,7 +8,7 @@
 
 #include "abstracttasksproxymodeliface.h"
 
-#include <QConcatenateTablesProxyModel>
+#include <KConcatenateRowsProxyModel>
 
 #include "taskmanager_export.h"
 
@@ -17,13 +17,13 @@ namespace TaskManager
 /**
  * @short A proxy tasks model for concatenating multiple source tasks models.
  *
- * This proxy model is a subclass of QConcatenateTablesProxyModel implementing
+ * This proxy model is a subclass of KConcatenateRowsProxyModel implementing
  * AbstractTasksModelIface, forwarding calls to the correct source model.
  *
  * @author Eike Hein <hein@kde.org>
  **/
 
-class TASKMANAGER_EXPORT ConcatenateTasksProxyModel : public QConcatenateTablesProxyModel, public AbstractTasksProxyModelIface
+class TASKMANAGER_EXPORT ConcatenateTasksProxyModel : public KConcatenateRowsProxyModel, public AbstractTasksProxyModelIface
 {
     Q_OBJECT