diff --git a/CHANGELOG.md b/CHANGELOG.md
index b38c89a..19d4c84 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # SwissPayment Changelog
 
-## 0.X.X (XXXX-XX-XX)
+## 0.4.1 (2016-08-31)
 
   * Write IID without leading zeroes (for legacy systems)
 
diff --git a/src/Z38/SwissPayment/Message/AbstractMessage.php b/src/Z38/SwissPayment/Message/AbstractMessage.php
index 90482b6..f43a0d8 100644
--- a/src/Z38/SwissPayment/Message/AbstractMessage.php
+++ b/src/Z38/SwissPayment/Message/AbstractMessage.php
@@ -72,7 +72,7 @@ public function getSoftwareName()
      */
     public function getSoftwareVersion()
     {
-        return '0.4.0';
+        return '0.4.1';
     }
 
     /**