diff --git a/README.md b/README.md
index 48fe039..71adc83 100644
--- a/README.md
+++ b/README.md
@@ -3,9 +3,14 @@
 This is Light weight mail notifier written in PyQt5. It checks your mailbox periodically and notify you if you have new mail.
 
 ## Screenshots
-![MailboxEmpty](https://raw.github.com/rinaldus/mail-notify/master/screenshots/screen1.jpg)
-![MailboxFull](https://raw.github.com/rinaldus/mail-notify/master/screenshots/screen2.jpg)
-![Settings](https://raw.github.com/rinaldus/mail-notify/master/screenshots/screen3.jpg)
+### Version 3.0
+![MailboxEmpty](https://raw.github.com/rinaldus/mail-notifier/master/screenshots/no_unread_mails-3.0.jpg)
+![MailboxFull](https://raw.github.com/rinaldus/mail-notifier/master/screenshots/unread_mails-3.0.jpg)
+![Details](https://raw.github.com/rinaldus/mail-notifier/master/screenshots/details-3.0.jpg)
+### Version 1.0
+![MailboxEmpty](https://raw.github.com/rinaldus/mail-notifier/master/screenshots/screen1.jpg)
+![MailboxFull](https://raw.github.com/rinaldus/mail-notifier/master/screenshots/screen2.jpg)
+![Settings](https://raw.github.com/rinaldus/mail-notifier/master/screenshots/screen3.jpg)
 
 ## Install
 
@@ -21,6 +26,12 @@ $ chmod +x mail-notifier.py
 
 ## Changelog
 
+### Version 3.0 (release date: 26.07.16)
+* System tray icon displays count of unread mail directly on itself
+* Popup notification behaviour was changed: now popup notification appears only if the number of unread emails has
+changed since last mail check
+* Now you can view a short information about unread emails by click on system tray icon or choose "Details" from system tray menu
+
 ### Version 2.0 (release date: 23.03.16)
 * **Important! Users of Mail Notifier 1.x have to delete old configuration file located in ~/.config/mail-notifier/settings.conf before first launch of new version**
 * New "About" window
diff --git a/mail-notifier.py b/mail-notifier.py
index 8ce3472..654ae97 100755
--- a/mail-notifier.py
+++ b/mail-notifier.py
@@ -266,6 +266,7 @@ class Details(QDialog):
         
         self.ui = Ui_Details()
         self.ui.setupUi(self)
+        self.setWindowFlags(QtCore.Qt.Window)
         self.ui.btnRefresh.clicked.connect(self.Refresh_clicked)
         
     def closeEvent(self, event):
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