diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -550,6 +550,7 @@ void MainWindow::saveAllSettings(QSettin
     plotMan->saveSettings(settings);
     commandPanel.saveSettings(settings);
     recordPanel.saveSettings(settings);
+    updateCheckDialog.saveSettings(settings);
 }
 
 void MainWindow::loadAllSettings(QSettings* settings)
@@ -562,6 +563,7 @@ void MainWindow::loadAllSettings(QSettin
     plotMan->loadSettings(settings);
     commandPanel.loadSettings(settings);
     recordPanel.loadSettings(settings);
+    updateCheckDialog.loadSettings(settings);
 }
 
 void MainWindow::saveMWSettings(QSettings* settings)
diff --git a/src/setting_defines.h b/src/setting_defines.h
--- a/src/setting_defines.h
+++ b/src/setting_defines.h
@@ -30,6 +30,7 @@ const char SettingGroup_Channels[] = "Ch
 const char SettingGroup_Plot[] = "Plot";
 const char SettingGroup_Commands[] = "Commands";
 const char SettingGroup_Record[] = "Record";
+const char SettingGroup_UpdateCheck[] = "UpdateCheck";
 
 // mainwindow setting keys
 const char SG_MainWindow_Size[] = "size";
@@ -103,4 +104,8 @@ const char SG_Record_Header[]           
 const char SG_Record_Separator[]        = "separator";
 const char SG_Record_DisableBuffering[] = "disableBuffering";
 
+// update check settings keys
+const char SG_UpdateCheck_Periodic[]  = "periodicCheck";
+const char SG_UpdateCheck_LastCheck[] = "lastCheck";
+
 #endif // SETTING_DEFINES_H
diff --git a/src/updatecheckdialog.cpp b/src/updatecheckdialog.cpp
--- a/src/updatecheckdialog.cpp
+++ b/src/updatecheckdialog.cpp
@@ -17,6 +17,7 @@
   along with serialplot.  If not, see <http://www.gnu.org/licenses/>.
 */
 
+#include "setting_defines.h"
 #include "updatecheckdialog.h"
 #include "ui_updatecheckdialog.h"
 
@@ -42,9 +43,9 @@ UpdateCheckDialog::UpdateCheckDialog(QWi
                 }
                 else
                 {
+                    show();
                     text = QString("Found update to version %1. Click to <a href=\"%2\">download</a>.")\
                         .arg(newVersion).arg(downloadUrl);
-                    qDebug() << text;
                 }
 
                 ui->label->setText(text);
@@ -66,3 +67,22 @@ void UpdateCheckDialog::closeEvent(QShow
 {
     if (updateChecker.isChecking()) updateChecker.cancelCheck();
 }
+
+void UpdateCheckDialog::saveSettings(QSettings* settings)
+{
+    settings->beginGroup(SettingGroup_UpdateCheck);
+    settings->setValue(SG_UpdateCheck_Periodic, ui->cbPeriodic->isChecked());
+    settings->endGroup();
+}
+
+void UpdateCheckDialog::loadSettings(QSettings* settings)
+{
+    settings->beginGroup(SettingGroup_UpdateCheck);
+    ui->cbPeriodic->setChecked(settings->value(SG_UpdateCheck_Periodic).toBool());
+    settings->endGroup();
+
+    if (ui->cbPeriodic->isChecked())
+    {
+        updateChecker.checkUpdate();
+    }
+}
diff --git a/src/updatecheckdialog.h b/src/updatecheckdialog.h
--- a/src/updatecheckdialog.h
+++ b/src/updatecheckdialog.h
@@ -21,6 +21,7 @@
 #define UPDATECHECKDIALOG_H
 
 #include <QDialog>
+#include <QSettings>
 #include "updatechecker.h"
 
 namespace Ui {
@@ -35,6 +36,11 @@ public:
     explicit UpdateCheckDialog(QWidget *parent = 0);
     ~UpdateCheckDialog();
 
+    /// Stores update settings into a `QSettings`.
+    void saveSettings(QSettings* settings);
+    /// Loads update settings from a `QSettings`.
+    void loadSettings(QSettings* settings);
+
 private:
     Ui::UpdateCheckDialog *ui;
     UpdateChecker updateChecker;
diff --git a/src/updatecheckdialog.ui b/src/updatecheckdialog.ui
--- a/src/updatecheckdialog.ui
+++ b/src/updatecheckdialog.ui
@@ -25,6 +25,16 @@
     </widget>
    </item>
    <item>
+    <widget class="QCheckBox" name="cbPeriodic">
+     <property name="text">
+      <string>Check updates periodically</string>
+     </property>
+     <property name="checked">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+   <item>
     <widget class="QDialogButtonBox" name="buttonBox">
      <property name="orientation">
       <enum>Qt::Horizontal</enum>
diff --git a/src/updatechecker.cpp b/src/updatechecker.cpp
--- a/src/updatechecker.cpp
+++ b/src/updatechecker.cpp
@@ -47,6 +47,8 @@ bool UpdateChecker::isChecking() const
 
 void UpdateChecker::checkUpdate()
 {
+    if (isChecking()) return;
+
     auto req = QNetworkRequest(QUrl(BB_DOWNLOADS_URL));
     activeReply = nam.get(req);
 }