diff --git a/CHANGELOG.md b/CHANGELOG.md
index d68b6c45b..83e36910b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## [0.4.0-SNAPSHOT] - 2021-02-??
+## [0.4.0] - 2021-02-17
 
 ### Added
 - Initial support for Energy Management (WHO=18)
diff --git a/pom.xml b/pom.xml
index 1b158edf4..20a233135 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
 
 	<groupId>com.github.openwebnet4j</groupId>
 	<artifactId>openwebnet4j</artifactId>
-	<version>0.4.0-SNAPSHOT</version>
+	<version>0.4.0</version>
 	<packaging>jar</packaging>
 
 	<name>openwebnet4j OpenWebNet Java library</name>