diff --git a/src/updatecheckdialog.h b/src/updatecheckdialog.h
new file mode 100644
--- /dev/null
+++ b/src/updatecheckdialog.h
@@ -0,0 +1,54 @@
+/*
+  Copyright © 2017 Hasan Yavuz Özderya
+
+  This file is part of serialplot.
+
+  serialplot is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  serialplot is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with serialplot.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef UPDATECHECKDIALOG_H
+#define UPDATECHECKDIALOG_H
+
+#include <QDialog>
+#include <QDate>
+#include <QSettings>
+#include "updatechecker.h"
+
+namespace Ui {
+class UpdateCheckDialog;
+}
+
+class UpdateCheckDialog : public QDialog
+{
+    Q_OBJECT
+
+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;
+    QDate lastCheck;
+
+    void showEvent(QShowEvent *event);
+    void closeEvent(QShowEvent *event);
+};
+
+#endif // UPDATECHECKDIALOG_H