diff --git a/pom.xml b/pom.xml
index 145a3c4..a39c758 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <parent>
@@ -11,7 +10,7 @@
 
     <groupId>ch.fritteli.a-maze-r</groupId>
     <artifactId>maze-generator</artifactId>
-    <version>0.3.1-SNAPSHOT</version>
+    <version>0.4.0</version>
 
     <name>A-Maze-R Generator</name>
     <description>A-Maze-R, The Maze Generator. It is a library for generating mazes in various output formats.
@@ -45,7 +44,7 @@
         <connection>scm:git:https://gittr.ch/java/maze-generator.git</connection>
         <developerConnection>scm:git:ssh://git@gittr.ch/java/maze-generator.git</developerConnection>
         <url>https://gittr.ch/java/maze-generator</url>
-        <tag>HEAD</tag>
+        <tag>v0.4.0</tag>
     </scm>
 
     <distributionManagement>