diff --git a/.gitignore b/.gitignore
index 28b0fe5..a70a722 100644
--- a/.gitignore
+++ b/.gitignore
@@ -44,3 +44,5 @@ xrechnung
 
 # Mac stuff
 .DS_Store
+andre*-simple.xml
+somePrefix*.xml
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 5673d45..56e5cc7 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -3,7 +3,8 @@ image: maven:latest
 variables:
   BUILD_PROPS: "-Dbuild.revision=$CI_COMMIT_SHA -Dbuild.branch=$CI_COMMIT_REF_NAME -Dbuild.number=$CI_PIPELINE_IID -Dfile.encoding=UTF-8  -Dhttp.keepAlive=false -Dmaven.wagon.http.pool=false"
   MAVEN_OPTS: "-Dmaven.repo.local=$CI_PROJECT_DIR/.m2/repository -Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=WARN -Dorg.slf4j.simpleLogger.showDateTime=true -Djava.awt.headless=true"
-  MAVEN_CLI_OPTS: " --batch-mode  --errors --fail-at-end --show-version -s .mvn/settings.xml"
+  MAVEN_CLI_OPTS: " --batch-mode  --update-snapshots --errors --fail-at-end --show-version -s .mvn/settings.xml"
+  MAVEN_CLI_OPTS_CENTRAL: " --batch-mode --show-version -s .mvn/settings-maven-central.xml"
 
 before_script:
   - export CI_JOB_TIMESTAMP="-Dbuild.timestamp=$(date --utc --iso-8601=seconds)"
@@ -92,6 +93,11 @@ deploy:
     - mvn $MAVEN_CLI_OPTS  deploy:deploy-file -Dfile=target/validationtool-${PROJECT_VERSION}-sources.jar -DgroupId=kosit -DartifactId=validator -Dclassifier="sources" -Dversion=${PROJECT_VERSION} -Dpackaging=jar -DrepositoryId="gitlab-maven" -Durl=https://projekte.kosit.org/api/v4/projects/7/packages/maven
   when: manual
 
+deploy-snapshot:
+  extends: java-8
+  script:
+    - mvn $MAVEN_CLI_OPTS_CENTRAL -P release-snapshot deploy
+
 create-build-image:
   stage: deploy
   image: docker:latest
diff --git a/.mvn/settings-maven-central.xml b/.mvn/settings-maven-central.xml
new file mode 100644
index 0000000..7fc46fe
--- /dev/null
+++ b/.mvn/settings-maven-central.xml
@@ -0,0 +1,11 @@
+<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0" 
+          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
+  <servers>
+    <server>
+      <id>central</id>
+      <username>${MVN_CENTRAL_USER}</username>
+      <password>${MVN_CENTRAL_TOKEN}</password>
+    </server>
+  </servers>
+</settings>
diff --git a/.mvn/settings.xml b/.mvn/settings.xml
index d1b2b61..0b53a90 100644
--- a/.mvn/settings.xml
+++ b/.mvn/settings.xml
@@ -1,36 +1,6 @@
-<!--
-  ~ Copyright 2017-2022  Koordinierungsstelle für IT-Standards (KoSIT)
-  ~
-  ~ Licensed under the Apache License, Version 2.0 (the "License");
-  ~ you may not use this file except in compliance with the License.
-  ~ You may obtain a copy of the License at
-  ~
-  ~     http://www.apache.org/licenses/LICENSE-2.0
-  ~
-  ~ Unless required by applicable law or agreed to in writing, software
-  ~ distributed under the License is distributed on an "AS IS" BASIS,
-  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  ~ See the License for the specific language governing permissions and
-  ~ limitations under the License.
-  -->
-
-<settings xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/SETTINGS/1.1.0"
-        xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.1.0 http://maven.apache.org/xsd/settings-1.1.0.xsd">
-<!--
-  ~ Copyright 2017-2021  Koordinierungsstelle für IT-Standards (KoSIT)
-  ~
-  ~ Licensed under the Apache License, Version 2.0 (the "License");
-  ~ you may not use this file except in compliance with the License.
-  ~ You may obtain a copy of the License at
-  ~
-  ~     http://www.apache.org/licenses/LICENSE-2.0
-  ~
-  ~ Unless required by applicable law or agreed to in writing, software
-  ~ distributed under the License is distributed on an "AS IS" BASIS,
-  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  ~ See the License for the specific language governing permissions and
-  ~ limitations under the License.
-  -->
+<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0" 
+          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
     <servers>
         <server>
             <id>gitlab-maven</id>
diff --git a/pom.xml b/pom.xml
index 2690237..7214bfe 100644
--- a/pom.xml
+++ b/pom.xml
@@ -21,10 +21,10 @@
 
     <name>KoSIT XML Prüftool Implementierung</name>
 
-    <groupId>de.kosit</groupId>
-    <version>1.5.1</version>
-
+    <groupId>org.kosit</groupId>
     <artifactId>validationtool</artifactId>
+    <version>1.5.1-SNAPSHOT</version>
+    
     <description>KoSIT XML Validator against XSD and Schematron based on defined scenarios.</description>
     <developers>
         <!-- In alphabetical order by last name -->
@@ -67,12 +67,25 @@
         <version.saxon-he>12.8</version.saxon-he>
         <version.slf4j>2.0.17</version.slf4j>
     </properties>
+    
     <repositories>
         <repository>
             <id>project.local</id>
             <name>project</name>
             <url>file:${project.basedir}/libs</url>
         </repository>
+
+        <repository>
+            <name>Central Portal Snapshots</name>
+            <id>central-portal-snapshots</id>
+            <url>https://central.sonatype.com/repository/maven-snapshots/</url>
+            <releases>
+                <enabled>false</enabled>
+            </releases>
+            <snapshots>
+                <enabled>true</enabled>
+            </snapshots>
+        </repository>
     </repositories>
 
     <dependencies>
@@ -172,6 +185,26 @@
                 <filtering>true</filtering>
             </resource>
         </resources>
+        
+        <pluginManagement>
+            <plugins>
+                <plugin>
+                    <groupId>org.sonatype.central</groupId>
+                    <artifactId>central-publishing-maven-plugin</artifactId>
+                    <version>0.8.0</version>
+                    <extensions>true</extensions>
+                    <configuration>
+                        <publishingServerId>central</publishingServerId>
+                        <autoPublish>true</autoPublish>
+                    </configuration>
+                </plugin>
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-gpg-plugin</artifactId>
+                    <version>3.2.8</version>
+                </plugin>    
+            </plugins>
+        </pluginManagement>
 
         <plugins>
            <!-- for PR 152 -->
@@ -590,7 +623,6 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-gpg-plugin</artifactId>
-                        <version>3.2.8</version>
                         <executions>
                             <execution>
                                 <id>sign-artifacts</id>
@@ -660,6 +692,17 @@
                 </plugins>
             </build>
         </profile>
+        <profile>
+            <id>release-snapshot</id>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.sonatype.central</groupId>
+                        <artifactId>central-publishing-maven-plugin</artifactId>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
     </profiles>
 
     <reporting>
@@ -669,12 +712,14 @@
     </reporting>
 
     <scm>
-        <connection>https://github.com/itplr-kosit/validationtool.git</connection>
+        <connection>scm:git:https://github.com/itplr-kosit/validator.git</connection>
         <developerConnection>scm:git:https://projekte.kosit.org/kosit/validator.git</developerConnection>
-        <tag>v1.1.0</tag>
+        <tag>release/1.5.x</tag>
         <url>https://github.com/itplr-kosit/validator</url>
     </scm>
+    
     <url>https://github.com/itplr-kosit/validator</url>
+    
     <licenses>
         <license>
             <name>Apache License, Version 2.0</name>
@@ -682,12 +727,4 @@
             <distribution>repo</distribution>
         </license>
     </licenses>
-    <distributionManagement>
-        <repository>
-            <id>sonatype-nexus-staging</id>
-            <name>Nexus Release Repository</name>
-            <url>https://oss.sonatype.org/service/local/staging/deploy/maven2</url>
-        </repository>
-    </distributionManagement>
-
 </project>