diff --git a/CHANGELOG b/CHANGELOG
new file mode 100644
index 0000000000..34f88f269a
--- /dev/null
+++ b/CHANGELOG
@@ -0,0 +1,2 @@
+Version 4.0.0 - 2016-05-02
+* Initial release
\ No newline at end of file
diff --git a/COPYRIGHT b/COPYRIGHT
index f2d1686a71..029f63b858 100644
--- a/COPYRIGHT
+++ b/COPYRIGHT
@@ -1,6 +1,6 @@
 Copyright (C) 2016 Nicolas Évrard.
 Copyright (C) 2013-2015 NaN-tic.
-Copyright (C) 2008-2015 Cédric Krier.
+Copyright (C) 2008-2016 Cédric Krier.
 Copyright (C) 2008-2013 Bertrand Chenal.
 Copyright (C) 2008-2016 B2CK SPRL.
 
diff --git a/tryton.cfg b/tryton.cfg
index da09cd28e8..71c9d3c1c3 100644
--- a/tryton.cfg
+++ b/tryton.cfg
@@ -1,5 +1,5 @@
 [tryton]
-version=3.9.0
+version=4.0.0
 depends:
     ir
     purchase