diff --git a/History.md b/History.md
index 36d225ac..3b88fbfc 100644
--- a/History.md
+++ b/History.md
@@ -1,7 +1,14 @@
 add signature comment into xml
 upgraded en16931 validation to 1.3.7
 xrechnung schematron 1.6.1
-updated logback from 1.2.3 to 1.2.9 https://github.com/ZUGFeRD/mustangproject/security/dependabot/validator/pom.xml/ch.qos.logback:logback-core/open
+
+2.3.3
+=======
+2021-12-21
+
+- updated logback from 1.2.3 to 1.2.9 https://github.com/ZUGFeRD/mustangproject/security/dependabot/validator/pom.xml/ch.qos.logback:logback-core/open
+- nor 2021-12-13 nor 2021-12-20 of https://github.com/mergebase/log4j-detector have complained so far
+
 
 2.3.2
 =======
diff --git a/Mustang-CLI/pom.xml b/Mustang-CLI/pom.xml
index 7b096ff8..4adcd09b 100644
--- a/Mustang-CLI/pom.xml
+++ b/Mustang-CLI/pom.xml
@@ -3,14 +3,14 @@
 <parent>
     <groupId>org.mustangproject</groupId>
     <artifactId>core</artifactId>
-    <version>2.3.3-SNAPSHOT</version>
+    <version>2.3.4-SNAPSHOT</version>
 </parent>
    <modelVersion>4.0.0</modelVersion>
    <groupId>org.mustangproject</groupId>
    <artifactId>Mustang-CLI</artifactId>
    <name>e-invoices commandline tool, allowing to create(embed), split and validate Factur-X/ZUGFeRD files. Validation should also work for XRechnung/CII. </name>
    <packaging>jar</packaging>
-   <version>2.3.3-SNAPSHOT</version>
+   <version>2.3.4-SNAPSHOT</version>
    <repositories>
       <repository>
          <!-- for jargs -->
@@ -31,7 +31,7 @@
       <dependency>
          <groupId>org.mustangproject</groupId>
          <artifactId>validator</artifactId>
-         <version>2.3.3-SNAPSHOT</version>
+         <version>2.3.4-SNAPSHOT</version>
          <!-- prototypes of new mustangproject versions can be installed by referring to them and installed to the local repo from a jar file with
         mvn install:install-file -Dfile=mustang-1.5.4-SNAPSHOT.jar -DgroupId=org.mustangproject.ZUGFeRD -DartifactId=mustang -Dversion=1.5.4 -Dpackaging=jar -DgeneratePom=true
         -->
@@ -181,19 +181,6 @@
                </execution>
             </executions>
          </plugin>
-         <plugin>
-            <groupId>org.apache.maven.plugins</groupId>
-            <artifactId>maven-failsafe-plugin</artifactId>
-            <version>2.22.2</version>
-            <executions>
-               <execution>
-                  <goals>
-                     <goal>integration-test</goal>
-                     <goal>verify</goal>
-                  </goals>
-               </execution>
-            </executions>
-         </plugin>
       </plugins>
    </build>
    <licenses>
diff --git a/library/pom.xml b/library/pom.xml
index 072fcd43..db6bac19 100644
--- a/library/pom.xml
+++ b/library/pom.xml
@@ -3,13 +3,13 @@
 <parent>
     <groupId>org.mustangproject</groupId>
     <artifactId>core</artifactId>
-    <version>2.3.3-SNAPSHOT</version>
+    <version>2.3.4-SNAPSHOT</version>
 </parent>
 
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>org.mustangproject</groupId>
 	<artifactId>library</artifactId>
-	<version>2.3.3-SNAPSHOT</version>
+	<version>2.3.4-SNAPSHOT</version>
 	<packaging>jar</packaging>
 	<name>Library to write, read and validate e-invoices (Factur-X, ZUGFeRD and to a limited extend XRechnung/CII).  </name>
 	<description>The Mustang project is a java library to read, write and validate Factur-X/ZUGFeRD meta data inside your invoice PDFs. To write files, a provided PDF/A will be combined with generated or provided XML.
@@ -19,7 +19,7 @@
 		<connection>scm:git:https://github.com/ZUGFeRD/mustangproject.git</connection>
 		<developerConnection>scm:git:https://github.com/ZUGFeRD/mustangproject.git</developerConnection>
 		<url>https://github.com/ZUGFeRD/mustangproject</url>
-		<tag>mustang-2.0.0-SNAPSHOT</tag>
+		<tag>core-2.3.2</tag>
 	</scm>
 	<repositories>
 		<repository><!-- for jargs -->
@@ -122,7 +122,6 @@
 			<groupId>org.xmlunit</groupId>
 			<artifactId>xmlunit-assertj</artifactId>
 			<version>2.6.3</version>
-			<scope>test</scope>
 		</dependency>
 		<!-- API -->
 		<dependency>
@@ -154,7 +153,7 @@
 				<artifactId>maven-shade-plugin</artifactId>
 				<version>3.2.1</version>
 				<configuration>
-					<shadedArtifactAttached>true</shadedArtifactAttached>
+					<shadedArtifactAttached>false</shadedArtifactAttached>
 					<minimizeJar>false</minimizeJar><!-- no longer java 11 compatible if set to true because it removes e.g. javax/xml/bind/annotation/XmlSchema-->
 					<filters>
 
diff --git a/pom.xml b/pom.xml
index 31a55ed7..f7385a69 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.mustangproject</groupId>
     <artifactId>core</artifactId>
-    <version>2.3.3-SNAPSHOT</version>
+    <version>2.3.4-SNAPSHOT</version>
     <packaging>pom</packaging>
     <name>Mustang</name>
 
@@ -20,7 +20,7 @@
         <connection>scm:git:git://github.com/dexecutor/dependent-tasks-executor.git</connection>
         <developerConnection>scm:git:git@github.com:dexecutor/dexecutor.git</developerConnection>
         <url>https://github.com/dexecutor/dependent-tasks-executor</url>
-      <tag>HEAD</tag>
+      <tag>core-2.3.2</tag>
   </scm>
     <build>
         <pluginManagement>
diff --git a/validator/pom.xml b/validator/pom.xml
index 653d5f13..f004869f 100644
--- a/validator/pom.xml
+++ b/validator/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <groupId>org.mustangproject</groupId>
         <artifactId>core</artifactId>
-        <version>2.3.3-SNAPSHOT</version>
+        <version>2.3.4-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.mustangproject</groupId>
@@ -11,7 +11,7 @@
     <name>Library to validate e-invoices (ZUGFeRD, Factur-X and Xrechnung)</name>
 
     <packaging>jar</packaging>
-    <version>2.3.3-SNAPSHOT</version>
+    <version>2.3.4-SNAPSHOT</version>
     <repositories>
         <repository>
             <!-- for jargs -->
@@ -82,7 +82,7 @@
         <dependency>
             <groupId>org.mustangproject</groupId>
             <artifactId>library</artifactId>
-            <version>2.3.3-SNAPSHOT</version>
+            <version>2.3.4-SNAPSHOT</version>
         </dependency>
         <dependency>
             <groupId>org.xmlunit</groupId>