diff --git a/configure.in b/configure.in
index 5bc80652f..e0ff4f582 100644
--- a/configure.in
+++ b/configure.in
@@ -5,7 +5,7 @@ dnl May need to run automake && aclocal first
 
 AC_PREREQ(2.57)
 dnl NOTE: arg to macro below becomes the "VERSION"
-AC_INIT(gramps, 3.5.0, [gramps-bugs@lists.sourceforge.net])
+AC_INIT(gramps, 4.0.0, [gramps-bugs@lists.sourceforge.net])
 AC_CONFIG_SRCDIR(configure.in)
 AM_INIT_AUTOMAKE([1.6.3 foreign])
 
diff --git a/setup.py b/setup.py
index 5c7e3d705..3baca1251 100644
--- a/setup.py
+++ b/setup.py
@@ -37,7 +37,7 @@ import codecs
 import commands
 from stat import ST_MODE
 
-VERSION = '3.5.0'
+VERSION = '4.0.0'
 ALL_LINGUAS = ('bg', 'ca', 'cs', 'da', 'de', 'en_GB', 'es', 'fi', 'fr', 'he',
                'hr', 'hu', 'it', 'ja', 'lt', 'nb', 'nl', 'nn', 'pl', 'pt_BR',
                'pt_PT', 'ru', 'sk', 'sl', 'sq', 'sv', 'uk', 'vi', 'zh_CN')