diff --git a/alfa-client/pom.xml b/alfa-client/pom.xml
index 6ac1c1214ae3da52a8839f70c541d6a67b3d55af..155340560e7db527d6e0d0de3b99f320f13bbfc8 100644
--- a/alfa-client/pom.xml
+++ b/alfa-client/pom.xml
@@ -24,13 +24,12 @@
     unter der Lizenz sind dem Lizenztext zu entnehmen.
 
 -->
-<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">
 
 	<parent>
 		<groupId>de.ozgcloud.alfa</groupId>
 		<artifactId>alfa</artifactId>
-		<version>2.2.0</version>
+		<version>2.3.0-SNAPSHOT</version>
 	</parent>
 
     <modelVersion>4.0.0</modelVersion>
diff --git a/alfa-server/pom.xml b/alfa-server/pom.xml
index bf2f3d3fac889f1d3669bc0c79a16f4fdab26942..cd18f5ebb3a482794fb46b30ed44cec42fa44b6d 100644
--- a/alfa-server/pom.xml
+++ b/alfa-server/pom.xml
@@ -1,11 +1,11 @@
-<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">
+<?xml version="1.0"?>
+<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>
 		<groupId>de.ozgcloud.alfa</groupId>
 		<artifactId>alfa</artifactId>
-		<version>2.2.0</version>
+		<version>2.3.0-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>alfa-server</artifactId>
diff --git a/alfa-service/pom.xml b/alfa-service/pom.xml
index 3d498ae7b7247289b40266f5f0e127e9de1b86b4..380cea0dadb30e4e4978d8ba87606a467fcfb083 100644
--- a/alfa-service/pom.xml
+++ b/alfa-service/pom.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0"?>
 <!--
 
     Copyright (C) 2022 Das Land Schleswig-Holstein vertreten durch den
@@ -23,15 +24,14 @@
     unter der Lizenz sind dem Lizenztext zu entnehmen.
 
 -->
-<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>
 		<groupId>de.ozgcloud.alfa</groupId>
 		<artifactId>alfa</artifactId>
-		<version>2.2.0</version>
+		<version>2.3.0-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>alfa-service</artifactId>
diff --git a/alfa-xdomea/pom.xml b/alfa-xdomea/pom.xml
index adec92db4c89a91403460fdbe033c353d1155f26..7d985b69d881b18f2336b216492a106f459eb4fd 100644
--- a/alfa-xdomea/pom.xml
+++ b/alfa-xdomea/pom.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0"?>
 <!--
 
     Copyright (C) 2023 Das Land Schleswig-Holstein vertreten durch den
@@ -23,16 +24,14 @@
     unter der Lizenz sind dem Lizenztext zu entnehmen.
 
 -->
-<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>
 		<groupId>de.ozgcloud.alfa</groupId>
 		<artifactId>alfa</artifactId>
-		<version>2.2.0</version>
+		<version>2.3.0-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>alfa-xdomea</artifactId>
diff --git a/pom.xml b/pom.xml
index 1937602b410641ef6f27f6e056935382ec5be68b..989352f06b0dc59b43774ac94bd7cba67683b255 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0"?>
 <!--
 
     Copyright (C) 2022 Das Land Schleswig-Holstein vertreten durch den
@@ -23,9 +24,7 @@
     unter der Lizenz sind dem Lizenztext zu entnehmen.
 
 -->
-<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 https://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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<parent>
@@ -36,7 +35,7 @@
 
 	<groupId>de.ozgcloud.alfa</groupId>
 	<artifactId>alfa</artifactId>
-	<version>2.2.0</version>
+	<version>2.3.0-SNAPSHOT</version>
 	<name>Alfa Parent</name>
 	<packaging>pom</packaging>
 
diff --git a/release-startdev.sh b/release-startdev.sh
index 89a0cb7ad075c650489d959a961af8b86749a255..1a0b61139aba8cad4e1b13f77bcb9f9382148b8c 100755
--- a/release-startdev.sh
+++ b/release-startdev.sh
@@ -16,6 +16,8 @@ echo
 # projectname/pom.xml:parent,main -> project.parent.version und project.version setzen
 #
 PROJECTS="pom.xml:main 
+          alfa-service/pom.xml:parent
+          alfa-xdomea/pom.xml:parent 
           alfa-server/pom.xml:parent 
           alfa-client/pom.xml:parent "