diff --git a/CHANGELOG b/CHANGELOG
index f79ba4e..09b7b19 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
 Version 3.0.0 - 2013-11-88
 * Initial release
 
+Version 4.2.0 - 2016-12-30
+* Tryton 4.2.0 release
+
diff --git a/locale/de_DE.po b/locale/de.po
similarity index 100%
rename from locale/de_DE.po
rename to locale/de.po
diff --git a/tryton.cfg b/tryton.cfg
index 72faf40..bad56e2 100644
--- a/tryton.cfg
+++ b/tryton.cfg
@@ -1,5 +1,5 @@
 [tryton]
-version=3.0.0
+version=4.2.0
 depends:
     ir
     res