diff --git a/cockatrice/src/client/game_logic/abstract_client.cpp b/cockatrice/src/client/game_logic/abstract_client.cpp
index c186ae323..bc227bf68 100644
--- a/cockatrice/src/client/game_logic/abstract_client.cpp
+++ b/cockatrice/src/client/game_logic/abstract_client.cpp
@@ -52,7 +52,7 @@ AbstractClient::AbstractClient(QObject *parent)
     FeatureSet features;
     features.initalizeFeatureList(clientFeatures);
 
-    connect(this, SIGNAL(sigQueuePendingCommand(PendingCommand *)), this, SLOT(queuePendingCommand(PendingCommand *)));
+    connect(this, &AbstractClient::sigQueuePendingCommand, this, &AbstractClient::queuePendingCommand);
 }
 
 AbstractClient::~AbstractClient()
diff --git a/cockatrice/src/client/network/release_channel.cpp b/cockatrice/src/client/network/release_channel.cpp
index b467aa4a4..d5cd672dc 100644
--- a/cockatrice/src/client/network/release_channel.cpp
+++ b/cockatrice/src/client/network/release_channel.cpp
@@ -38,7 +38,7 @@ void ReleaseChannel::checkForUpdates()
     QString releaseChannelUrl = getReleaseChannelUrl();
     qDebug() << "Searching for updates on the channel: " << releaseChannelUrl;
     response = netMan->get(QNetworkRequest(releaseChannelUrl));
-    connect(response, SIGNAL(finished()), this, SLOT(releaseListFinished()));
+    connect(response, &QNetworkReply::finished, this, &ReleaseChannel::releaseListFinished);
 }
 
 // Different release channel checking functions for different operating systems
@@ -158,7 +158,7 @@ void StableReleaseChannel::releaseListFinished()
     QString url = QString(STABLETAG_URL) + tagName;
     qDebug() << "Searching for commit hash corresponding to stable channel tag: " << tagName;
     response = netMan->get(QNetworkRequest(url));
-    connect(response, SIGNAL(finished()), this, SLOT(tagListFinished()));
+    connect(response, &QNetworkReply::finished, this, &StableReleaseChannel::tagListFinished);
 }
 
 void StableReleaseChannel::tagListFinished()
@@ -260,7 +260,7 @@ void BetaReleaseChannel::releaseListFinished()
 
     qDebug() << "Searching for a corresponding file on the beta channel: " << betaBuildDownloadUrl;
     response = netMan->get(QNetworkRequest(betaBuildDownloadUrl));
-    connect(response, SIGNAL(finished()), this, SLOT(fileListFinished()));
+    connect(response, &QNetworkReply::finished, this, &BetaReleaseChannel::fileListFinished);
 }
 
 void BetaReleaseChannel::fileListFinished()
diff --git a/cockatrice/src/client/network/replay_timeline_widget.cpp b/cockatrice/src/client/network/replay_timeline_widget.cpp
index 83b1abda0..e92b4133e 100644
--- a/cockatrice/src/client/network/replay_timeline_widget.cpp
+++ b/cockatrice/src/client/network/replay_timeline_widget.cpp
@@ -9,7 +9,7 @@ ReplayTimelineWidget::ReplayTimelineWidget(QWidget *parent)
     : QWidget(parent), maxBinValue(1), maxTime(1), timeScaleFactor(1.0), currentTime(0), currentEvent(0)
 {
     replayTimer = new QTimer(this);
-    connect(replayTimer, SIGNAL(timeout()), this, SLOT(replayTimerTimeout()));
+    connect(replayTimer, &QTimer::timeout, this, &ReplayTimelineWidget::replayTimerTimeout);
 
     rewindBufferingTimer = new QTimer(this);
     rewindBufferingTimer->setSingleShot(true);
diff --git a/cockatrice/src/client/network/spoiler_background_updater.cpp b/cockatrice/src/client/network/spoiler_background_updater.cpp
index e60eeb96a..642c48d3e 100644
--- a/cockatrice/src/client/network/spoiler_background_updater.cpp
+++ b/cockatrice/src/client/network/spoiler_background_updater.cpp
@@ -45,10 +45,10 @@ void SpoilerBackgroundUpdater::downloadFromURL(QUrl url, bool saveResults)
 
     if (saveResults) {
         // This will write out to the file (used for spoiler.xml)
-        connect(reply, SIGNAL(finished()), this, SLOT(actDownloadFinishedSpoilersFile()));
+        connect(reply, &QNetworkReply::finished, this, &SpoilerBackgroundUpdater::actDownloadFinishedSpoilersFile);
     } else {
         // This will check the status (used to see if we're in spoiler season or not)
-        connect(reply, SIGNAL(finished()), this, SLOT(actCheckIfSpoilerSeasonEnabled()));
+        connect(reply, &QNetworkReply::finished, this, &SpoilerBackgroundUpdater::actCheckIfSpoilerSeasonEnabled);
     }
 }
 
diff --git a/cockatrice/src/client/sound_engine.cpp b/cockatrice/src/client/sound_engine.cpp
index 35cc6d5c7..5ffb39817 100644
--- a/cockatrice/src/client/sound_engine.cpp
+++ b/cockatrice/src/client/sound_engine.cpp
@@ -15,8 +15,8 @@
 SoundEngine::SoundEngine(QObject *parent) : QObject(parent), player(nullptr)
 {
     ensureThemeDirectoryExists();
-    connect(&SettingsCache::instance(), SIGNAL(soundThemeChanged()), this, SLOT(themeChangedSlot()));
-    connect(&SettingsCache::instance(), SIGNAL(soundEnabledChanged()), this, SLOT(soundEnabledChanged()));
+    connect(&SettingsCache::instance(), &SettingsCache::soundThemeChanged, this, &SoundEngine::themeChangedSlot);
+    connect(&SettingsCache::instance(), &SettingsCache::soundEnabledChanged, this, &SoundEngine::soundEnabledChanged);
 
     soundEnabledChanged();
     themeChangedSlot();
diff --git a/cockatrice/src/client/tapped_out_interface.cpp b/cockatrice/src/client/tapped_out_interface.cpp
index c0cbab095..796b9ddc7 100644
--- a/cockatrice/src/client/tapped_out_interface.cpp
+++ b/cockatrice/src/client/tapped_out_interface.cpp
@@ -14,7 +14,7 @@ TappedOutInterface::TappedOutInterface(CardDatabase &_cardDatabase, QObject *par
     : QObject(parent), cardDatabase(_cardDatabase)
 {
     manager = new QNetworkAccessManager(this);
-    connect(manager, SIGNAL(finished(QNetworkReply *)), this, SLOT(queryFinished(QNetworkReply *)));
+    connect(manager, &QNetworkAccessManager::finished, this, &TappedOutInterface::queryFinished);
 }
 
 void TappedOutInterface::queryFinished(QNetworkReply *reply)
diff --git a/cockatrice/src/client/update_downloader.cpp b/cockatrice/src/client/update_downloader.cpp
index 161137cbe..29bb9a7d2 100644
--- a/cockatrice/src/client/update_downloader.cpp
+++ b/cockatrice/src/client/update_downloader.cpp
@@ -15,9 +15,9 @@ void UpdateDownloader::beginDownload(QUrl downloadUrl)
         originalUrl = downloadUrl;
 
     response = netMan->get(QNetworkRequest(downloadUrl));
-    connect(response, SIGNAL(finished()), this, SLOT(fileFinished()));
-    connect(response, SIGNAL(downloadProgress(qint64, qint64)), this, SLOT(downloadProgress(qint64, qint64)));
-    connect(this, SIGNAL(stopDownload()), response, SLOT(abort()));
+    connect(response, QNetworkReply::finished, this, fileFinished);
+    connect(response, QNetworkReply::downloadProgress, this, downloadProgress);
+    connect(this, &UpdateDownloader::stopDownload, response, &QNetworkReply::abort);
 }
 
 void UpdateDownloader::downloadError(QNetworkReply::NetworkError)
diff --git a/cockatrice/src/main.cpp b/cockatrice/src/main.cpp
index 96d521d23..ba4408c67 100644
--- a/cockatrice/src/main.cpp
+++ b/cockatrice/src/main.cpp
@@ -106,7 +106,7 @@ int main(int argc, char *argv[])
 {
     QApplication app(argc, argv);
 
-    QObject::connect(&app, SIGNAL(lastWindowClosed()), &app, SLOT(quit()));
+    QObject::connect(&app, QApplication::lastWindowClosed, &app, QApplication::quit);
 
     qInstallMessageHandler(CockatriceLogger);
 #ifdef Q_OS_WIN