diff --git a/src/plugins/analyzerbase/analyzerrunconfigwidget.cpp b/src/plugins/analyzerbase/analyzerrunconfigwidget.cpp
index 9c7d04c4f5a..2e3a28c2dbc 100644
--- a/src/plugins/analyzerbase/analyzerrunconfigwidget.cpp
+++ b/src/plugins/analyzerbase/analyzerrunconfigwidget.cpp
@@ -58,12 +58,13 @@ AnalyzerRunConfigWidget::AnalyzerRunConfigWidget(ProjectExplorer::IRunConfigurat
                             << QApplication::translate("ProjectExplorer::Internal::EditorSettingsPropertiesPage", "Custom")
                             );
     globalSettingLayout->addWidget(m_settingsCombo);
-    connect(m_settingsCombo, SIGNAL(activated(int)), this, SLOT(chooseSettings(int)));
+    connect(m_settingsCombo, static_cast<void (QComboBox::*)(int)>(&QComboBox::activated),
+            this, &AnalyzerRunConfigWidget::chooseSettings);
     m_restoreButton = new QPushButton(
                 QApplication::translate("ProjectExplorer::Internal::EditorSettingsPropertiesPage", "Restore Global"),
                 globalSetting);
     globalSettingLayout->addWidget(m_restoreButton);
-    connect(m_restoreButton, SIGNAL(clicked()), this, SLOT(restoreGlobal()));
+    connect(m_restoreButton, &QPushButton::clicked, this, &AnalyzerRunConfigWidget::restoreGlobal);
     globalSettingLayout->addStretch(2);
 
     QWidget *innerPane = new QWidget;
diff --git a/src/plugins/analyzerbase/analyzerruncontrol.cpp b/src/plugins/analyzerbase/analyzerruncontrol.cpp
index 6e1fc1fd07d..818c387d391 100644
--- a/src/plugins/analyzerbase/analyzerruncontrol.cpp
+++ b/src/plugins/analyzerbase/analyzerruncontrol.cpp
@@ -56,7 +56,8 @@ AnalyzerRunControl::AnalyzerRunControl(const AnalyzerStartParameters &sp,
     m_runConfig = runConfiguration;
     m_sp = sp;
 
-    connect(this, SIGNAL(finished()), SLOT(runControlFinished()));
+    connect(this, &AnalyzerRunControl::finished,
+            this, &AnalyzerRunControl::runControlFinished);
     connect(AnalyzerManager::stopAction(), SIGNAL(triggered()), SLOT(stopIt()));
 }
 
diff --git a/src/plugins/analyzerbase/startremotedialog.cpp b/src/plugins/analyzerbase/startremotedialog.cpp
index 2c0a9fa10fd..fe920ad1acc 100644
--- a/src/plugins/analyzerbase/startremotedialog.cpp
+++ b/src/plugins/analyzerbase/startremotedialog.cpp
@@ -94,12 +94,12 @@ StartRemoteDialog::StartRemoteDialog(QWidget *parent)
     d->arguments->setText(settings->value(QLatin1String("arguments")).toString());
     settings->endGroup();
 
-    connect(d->kitChooser, SIGNAL(activated(int)), SLOT(validate()));
-    connect(d->executable, SIGNAL(textChanged(QString)), SLOT(validate()));
-    connect(d->workingDirectory, SIGNAL(textChanged(QString)), SLOT(validate()));
-    connect(d->arguments, SIGNAL(textChanged(QString)), SLOT(validate()));
-    connect(d->buttonBox, SIGNAL(accepted()), SLOT(accept()));
-    connect(d->buttonBox, SIGNAL(rejected()), SLOT(reject()));
+    connect(d->kitChooser, &KitChooser::activated, this, &StartRemoteDialog::validate);
+    connect(d->executable, &QLineEdit::textChanged, this, &StartRemoteDialog::validate);
+    connect(d->workingDirectory, &QLineEdit::textChanged, this, &StartRemoteDialog::validate);
+    connect(d->arguments, &QLineEdit::textChanged, this, &StartRemoteDialog::validate);
+    connect(d->buttonBox, &QDialogButtonBox::accepted, this, &StartRemoteDialog::accept);
+    connect(d->buttonBox, &QDialogButtonBox::rejected, this, &StartRemoteDialog::reject);
 
     validate();
 }
diff --git a/src/plugins/diffeditor/diffeditorguicontroller.cpp b/src/plugins/diffeditor/diffeditorguicontroller.cpp
index 30aa62cfe65..5e7cab32743 100644
--- a/src/plugins/diffeditor/diffeditorguicontroller.cpp
+++ b/src/plugins/diffeditor/diffeditorguicontroller.cpp
@@ -57,10 +57,10 @@ DiffEditorGuiController::DiffEditorGuiController(
                                 m_syncScrollBars).toBool();
     s->endGroup();
 
-    connect(m_controller, SIGNAL(cleared(QString)),
-            this, SLOT(slotUpdateDiffFileIndex()));
-    connect(m_controller, SIGNAL(diffFilesChanged(QList<FileData>,QString)),
-            this, SLOT(slotUpdateDiffFileIndex()));
+    connect(m_controller, &DiffEditorController::cleared, this,
+            &DiffEditorGuiController::slotUpdateDiffFileIndex);
+    connect(m_controller, &DiffEditorController::diffFilesChanged, this,
+            &DiffEditorGuiController::slotUpdateDiffFileIndex);
     slotUpdateDiffFileIndex();
 }
 
diff --git a/src/plugins/diffeditor/diffeditormanager.cpp b/src/plugins/diffeditor/diffeditormanager.cpp
index a8d306ad079..dc4ee7b0d09 100644
--- a/src/plugins/diffeditor/diffeditormanager.cpp
+++ b/src/plugins/diffeditor/diffeditormanager.cpp
@@ -48,8 +48,8 @@ DiffEditorManager::DiffEditorManager(QObject *parent)
     m_instance = this;
 
     Core::EditorManager *editorManager = Core::EditorManager::instance();
-    connect(editorManager, SIGNAL(editorsClosed(QList<Core::IEditor*>)),
-            this, SLOT(slotEditorsClosed(QList<Core::IEditor*>)));
+    connect(editorManager, &Core::EditorManager::editorsClosed,
+            this, &DiffEditorManager::slotEditorsClosed);
 }
 
 DiffEditorManager::~DiffEditorManager()
diff --git a/src/plugins/diffeditor/diffeditorplugin.cpp b/src/plugins/diffeditor/diffeditorplugin.cpp
index a3d89c823be..177e6c9c0cf 100644
--- a/src/plugins/diffeditor/diffeditorplugin.cpp
+++ b/src/plugins/diffeditor/diffeditorplugin.cpp
@@ -163,7 +163,7 @@ bool DiffEditorPlugin::initialize(const QStringList &arguments, QString *errorMe
     QAction *diffAction = new QAction(tr("Diff..."), this);
     Core::Command *diffCommand = Core::ActionManager::registerAction(diffAction,
                              "DiffEditor.Diff", globalcontext);
-    connect(diffAction, SIGNAL(triggered()), this, SLOT(diff()));
+    connect(diffAction, &QAction::triggered, this, &DiffEditorPlugin::diff);
     toolsContainer->addAction(diffCommand, Constants::G_TOOLS_DIFF);
 
     addAutoReleasedObject(new DiffEditorFactory(this));
diff --git a/src/plugins/diffeditor/diffeditorreloader.cpp b/src/plugins/diffeditor/diffeditorreloader.cpp
index 88bc93795a6..86e6f9bcddd 100644
--- a/src/plugins/diffeditor/diffeditorreloader.cpp
+++ b/src/plugins/diffeditor/diffeditorreloader.cpp
@@ -64,10 +64,10 @@ void DiffEditorReloader::setController(DiffEditorController *controller)
     m_controller = controller;
 
     if (m_controller) {
-        connect(m_controller, SIGNAL(ignoreWhitespaceChanged(bool)),
-                this, SLOT(requestReload()));
-        connect(m_controller, SIGNAL(contextLinesNumberChanged(int)),
-                this, SLOT(requestReload()));
+        connect(m_controller, &DiffEditorController::ignoreWhitespaceChanged,
+                this, &DiffEditorReloader::requestReload);
+        connect(m_controller, &DiffEditorController::contextLinesNumberChanged,
+                this, &DiffEditorReloader::requestReload);
     }
 }
 
diff --git a/src/plugins/todo/cpptodoitemsscanner.cpp b/src/plugins/todo/cpptodoitemsscanner.cpp
index bb74b91d2ff..8918aff0b4b 100644
--- a/src/plugins/todo/cpptodoitemsscanner.cpp
+++ b/src/plugins/todo/cpptodoitemsscanner.cpp
@@ -44,8 +44,8 @@ CppTodoItemsScanner::CppTodoItemsScanner(const KeywordList &keywordList, QObject
 {
     CppTools::CppModelManager *modelManager = CppTools::CppModelManager::instance();
 
-    connect(modelManager, SIGNAL(documentUpdated(CPlusPlus::Document::Ptr)), this,
-        SLOT(documentUpdated(CPlusPlus::Document::Ptr)), Qt::DirectConnection);
+    connect(modelManager, &CppTools::CppModelManager::documentUpdated,
+            this, &CppTodoItemsScanner::documentUpdated, Qt::DirectConnection);
 }
 
 void CppTodoItemsScanner::keywordListChanged()
diff --git a/src/plugins/todo/qmljstodoitemsscanner.cpp b/src/plugins/todo/qmljstodoitemsscanner.cpp
index 3b0a7e7e1a6..a4018c07c02 100644
--- a/src/plugins/todo/qmljstodoitemsscanner.cpp
+++ b/src/plugins/todo/qmljstodoitemsscanner.cpp
@@ -40,8 +40,8 @@ QmlJsTodoItemsScanner::QmlJsTodoItemsScanner(const KeywordList &keywordList, QOb
     TodoItemsScanner(keywordList, parent)
 {
     QmlJS::ModelManagerInterface *model = QmlJS::ModelManagerInterface::instance();
-    connect(model, SIGNAL(documentUpdated(QmlJS::Document::Ptr)),
-        this, SLOT(documentUpdated(QmlJS::Document::Ptr)), Qt::DirectConnection);
+    connect(model, &QmlJS::ModelManagerInterface::documentUpdated,
+            this, &QmlJsTodoItemsScanner::documentUpdated, Qt::DirectConnection);
 }
 
 bool QmlJsTodoItemsScanner::shouldProcessFile(const QString &fileName)
diff --git a/src/plugins/todo/todoitemsprovider.cpp b/src/plugins/todo/todoitemsprovider.cpp
index ed63c80e9b2..0e76c9cd28f 100644
--- a/src/plugins/todo/todoitemsprovider.cpp
+++ b/src/plugins/todo/todoitemsprovider.cpp
@@ -170,7 +170,7 @@ void TodoItemsProvider::setupUpdateListTimer()
 {
     m_shouldUpdateList = false;
     QTimer *timer = new QTimer(this);
-    connect(timer, SIGNAL(timeout()), SLOT(updateListTimeoutElapsed()));
+    connect(timer, &QTimer::timeout, this, &TodoItemsProvider::updateListTimeoutElapsed);
     timer->start(Constants::OUTPUT_PANE_UPDATE_INTERVAL);
 }
 
diff --git a/src/plugins/todo/todooutputpane.cpp b/src/plugins/todo/todooutputpane.cpp
index eeabbc55bcd..2d900d2dd5c 100644
--- a/src/plugins/todo/todooutputpane.cpp
+++ b/src/plugins/todo/todooutputpane.cpp
@@ -49,8 +49,10 @@ TodoOutputPane::TodoOutputPane(TodoItemsModel *todoItemsModel, QObject *parent)
     createTreeView();
     createScopeButtons();
     setScanningScope(ScanningScopeCurrentFile); // default
-    connect(m_todoItemsModel, SIGNAL(layoutChanged()), SIGNAL(navigateStateUpdate()));
-    connect(m_todoItemsModel, SIGNAL(layoutChanged()), SLOT(updateTodoCount()));
+    connect(m_todoItemsModel, &TodoItemsModel::layoutChanged,
+            this, &TodoOutputPane::navigateStateUpdate);
+    connect(m_todoItemsModel, &TodoItemsModel::layoutChanged,
+            this, &TodoOutputPane::updateTodoCount);
 }
 
 TodoOutputPane::~TodoOutputPane()
@@ -183,7 +185,7 @@ void TodoOutputPane::createTreeView()
     m_todoTreeView = new TodoOutputTreeView();
     m_todoTreeView->setModel(m_todoItemsModel);
 
-    connect(m_todoTreeView, SIGNAL(activated(QModelIndex)), SLOT(todoTreeViewClicked(QModelIndex)));
+    connect(m_todoTreeView, &TodoOutputTreeView::activated, this, &TodoOutputPane::todoTreeViewClicked);
 }
 
 void TodoOutputPane::freeTreeView()
@@ -206,7 +208,8 @@ void TodoOutputPane::createScopeButtons()
     m_scopeButtons = new QButtonGroup();
     m_scopeButtons->addButton(m_wholeProjectButton);
     m_scopeButtons->addButton(m_currentFileButton);
-    connect(m_scopeButtons, SIGNAL(buttonClicked(QAbstractButton*)), SLOT(scopeButtonClicked(QAbstractButton*)));
+    connect(m_scopeButtons, static_cast<void (QButtonGroup::*)(QAbstractButton *)>(&QButtonGroup::buttonClicked),
+            this, &TodoOutputPane::scopeButtonClicked);
 
     m_spacer = new QWidget;
     m_spacer->setMinimumWidth(Constants::OUTPUT_TOOLBAR_SPACER_WIDTH);
diff --git a/src/plugins/todo/todoplugin.cpp b/src/plugins/todo/todoplugin.cpp
index 4922e564aee..702f3aa8ca9 100644
--- a/src/plugins/todo/todoplugin.cpp
+++ b/src/plugins/todo/todoplugin.cpp
@@ -114,15 +114,18 @@ void TodoPlugin::createTodoOutputPane()
     m_todoOutputPane = new TodoOutputPane(m_todoItemsProvider->todoItemsModel());
     addAutoReleasedObject(m_todoOutputPane);
     m_todoOutputPane->setScanningScope(m_settings.scanningScope);
-    connect(m_todoOutputPane, SIGNAL(scanningScopeChanged(ScanningScope)), SLOT(scanningScopeChanged(ScanningScope)));
-    connect(m_todoOutputPane, SIGNAL(todoItemClicked(TodoItem)), SLOT(todoItemClicked(TodoItem)));
+    connect(m_todoOutputPane, &TodoOutputPane::scanningScopeChanged,
+            this, &TodoPlugin::scanningScopeChanged);
+    connect(m_todoOutputPane, &TodoOutputPane::todoItemClicked,
+            this, &TodoPlugin::todoItemClicked);
 }
 
 void TodoPlugin::createOptionsPage()
 {
     m_optionsPage = new OptionsPage(m_settings);
     addAutoReleasedObject(m_optionsPage);
-    connect(m_optionsPage, SIGNAL(settingsChanged(Settings)), SLOT(settingsChanged(Settings)));
+    connect(m_optionsPage, &OptionsPage::settingsChanged,
+            this, &TodoPlugin::settingsChanged);
 }
 
 } // namespace Internal