diff --git a/CHANGES.rst b/CHANGES.rst
index faf429913..630abbb02 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,7 +1,7 @@
 Change log
 ==========
 
-Version 0.4.0 [unreleased]
+Version 0.4.0 [2016-03-22]
 --------------------------
 
 - `#40 <https://github.com/openwisp/netjsonconfig/issues/40>`_: [openwrt] added support for ULA prefix
diff --git a/netjsonconfig/version.py b/netjsonconfig/version.py
index 0284f2466..ab05a7ce3 100644
--- a/netjsonconfig/version.py
+++ b/netjsonconfig/version.py
@@ -1,4 +1,4 @@
-VERSION = (0, 4, 0, 'alpha')
+VERSION = (0, 4, 0, 'final')
 __version__ = VERSION