diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index 0584666b..d1d89e60 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -1,5 +1,5 @@
-0.4.0pre1 [2013-06-07]
-----------------------
+0.4.0 [2013-06-09]
+------------------
  - warnings are displayed
  - added warning for
   - Signature is expired
diff --git a/chrome/content/dkim.js b/chrome/content/dkim.js
index 2958fd27..5d01a5ae 100644
--- a/chrome/content/dkim.js
+++ b/chrome/content/dkim.js
@@ -4,7 +4,7 @@
  * Verifies the DKIM-Signatures as specified in RFC 6376
  * http://tools.ietf.org/html/rfc6376
  *
- * version: 0.4.0pre1 (07 June 2013)
+ * version: 0.4.0 (09 June 2013)
  *
  * Copyright (c) 2013 Philippe Lieser
  *
diff --git a/install.rdf b/install.rdf
index 5f1e9214..8c9026f0 100644
--- a/install.rdf
+++ b/install.rdf
@@ -10,7 +10,7 @@
 		<em:name>DKIM Verifier</em:name>
 		<em:description>Verifies the DKIM-Signature of an e-mail.</em:description>
 
-		<em:version>0.4.0pre1</em:version>
+		<em:version>0.4.0</em:version>
 
 		<em:creator>Philippe Lieser</em:creator>