diff --git a/ChangeLog b/ChangeLog
index 8fb4da7..63fd7ef 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,6 @@
+Diffuse 0.5.0 - 2016-07-10
+- convert to Python 3
+- convert to GTK 3
 - add support for Git submodules
 - added Akom Chotiphantawanon's Thai translation
 - updated Python highlighting for Python 3 grammar
diff --git a/README.md b/README.md
index 6987b15..0dcf09a 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Diffuse
 
-Version 0.4.8
+Version 0.5.0
 
 Copyright (C) 2006-2014 Derrick Moser <derrick_moser@yahoo.com>  
 Copyright (C) 2015-2016 Romain Failliot <romain.failliot@foolstep.com>
@@ -27,8 +27,8 @@ Some key features of Diffuse:
 
 ## Requirements
 
-* Python >= 2.4
-* PyGTK >= 2.10
+* Python >= 3.4
+* PyGObject >= 3.18
 
 Diffuse is implemented entirely in Python and should run on any platform with
 Python and PyGTK.  If you need to manually install PyGTK, please be aware its
diff --git a/src/usr/bin/diffuse b/src/usr/bin/diffuse
index 5af3fb7..433372e 100755
--- a/src/usr/bin/diffuse
+++ b/src/usr/bin/diffuse
@@ -65,9 +65,10 @@ gettext.textdomain('diffuse')
 _ = gettext.gettext
 
 APP_NAME = 'Diffuse'
-VERSION = '0.4.8'
-COPYRIGHT = _('Copyright © 2006-2014 Derrick Moser')
-WEBSITE = 'http://diffuse.sourceforge.net/'
+VERSION = '0.5.0'
+COPYRIGHT = _('''Copyright © 2006-2014 Derrick Moser
+Copyright © 2015-2016 Romain Failliot''')
+WEBSITE = 'https://github.com/MightyCreak/diffuse'
 
 # process help options
 if __name__ == '__main__':
@@ -6788,7 +6789,8 @@ class AboutDialog(Gtk.AboutDialog):
         self.set_comments(_('Diffuse is a graphical tool for merging and comparing text files.'))
         self.set_copyright(COPYRIGHT)
         self.set_website(WEBSITE)
-        self.set_authors([ _('Derrick Moser <derrick_moser@yahoo.com>') ])
+        self.set_authors([ _('Derrick Moser <derrick_moser@yahoo.com>'),
+                           _('Romain Failliot <romain.failliot@foolstep.com>') ])
         self.set_translator_credits(_('translator-credits'))
         ss = [ APP_NAME + ' ' + VERSION + '\n',
                COPYRIGHT + '\n\n',