diff --git a/maven/infrastructure/artifact-deployer/objectteams-otre-pom.xml b/maven/infrastructure/artifact-deployer/objectteams-otre-pom.xml
index d456a44..597a69d 100644
--- a/maven/infrastructure/artifact-deployer/objectteams-otre-pom.xml
+++ b/maven/infrastructure/artifact-deployer/objectteams-otre-pom.xml
@@ -4,7 +4,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>org.eclipse.objectteams</groupId>
   <artifactId>objectteams-otre</artifactId>
-  <version>2.3.0</version>
+  <version>2.4.0</version>
   <description>The Object Teams Runtime Environment (OTRE)</description>
 
   <licenses>
@@ -13,7 +13,7 @@
 		<comments>
 			This file is part of "Object Teams Development Tooling"-Software
 
-			Copyright 2010, 2013 GK Software AG and others.
+			Copyright 2010, 2015 GK Software AG and others.
 			All rights reserved. This program and the accompanying materials
 			are made available under the terms of the Eclipse Public License v1.0
 			which accompanies this distribution, and is available at
diff --git a/maven/infrastructure/artifact-deployer/pom.xml b/maven/infrastructure/artifact-deployer/pom.xml
index eeb3f8c..018a84d 100644
--- a/maven/infrastructure/artifact-deployer/pom.xml
+++ b/maven/infrastructure/artifact-deployer/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.eclipse.objectteams</groupId>
 		<artifactId>objectteams-parent-pom</artifactId>
-		<version>2.3.0</version>
+		<version>2.4.0</version>
 		<relativePath>../parent-pom</relativePath>
 	</parent>
 
@@ -24,7 +24,7 @@
 			<comments>
 				This file is part of "Object Teams Development Tooling"-Software
 
-				Copyright 2010, 2014 GK Software AG and others.
+				Copyright 2010, 2015 GK Software AG and others.
 				All rights reserved. This program and the accompanying materials
 				are made available under the terms of the Eclipse Public License v1.0
 				which accompanies this distribution, and is available at
@@ -53,9 +53,9 @@
 	<properties>
 		<!-- Object Teams versions, update manually: 					-->
 		<!--   version of the signed ecotj jar file:	 				-->
-		<ecotj.version>R-2.3.0-201406101336-signed</ecotj.version> 
+		<ecotj.version>R-2.4.0-201506091714-signed</ecotj.version> 
 		<!--   version of the org.eclipse.objectteams.runtime plugin:	-->
-		<otre.version>2.3.0.201406101339</otre.version>
+		<otre.version>2.4.0.201506091717</otre.version>
 		
 		<!-- locate the jar files to install/deploy: -->
 	    <ecotj.jar.file>${ecj.export.dir}/ecotj-${ecotj.version}.jar</ecotj.jar.file>
diff --git a/maven/infrastructure/parent-pom/pom.xml b/maven/infrastructure/parent-pom/pom.xml
index 36a89ca..2c84177 100644
--- a/maven/infrastructure/parent-pom/pom.xml
+++ b/maven/infrastructure/parent-pom/pom.xml
@@ -4,7 +4,7 @@
 	
 	<groupId>org.eclipse.objectteams</groupId>
 	<artifactId>objectteams-parent-pom</artifactId>
-	<version>2.3.0</version>
+	<version>2.4.0</version>
 	<packaging>pom</packaging>
 	
 	<name>Object Teams parent pom</name>
@@ -23,7 +23,7 @@
 			<comments>
 				This file is part of "Object Teams Development Tooling"-Software.
 
-				Copyright 2010, 2014 GK Software AG and others.
+				Copyright 2010, 2015 GK Software AG and others.
 				All rights reserved. This program and the accompanying materials
 				are made available under the terms of the Eclipse Public License v1.0
 				which accompanies this distribution, and is available at
@@ -82,11 +82,11 @@
     	<project-repository-path>maven/infrastructure/parent-pom</project-repository-path>
 
 		<!-- Our Version: -->
-		<otj.version>2.3.0</otj.version>
+		<otj.version>2.4.0</otj.version>
 
 		<!-- Versions of dependencies: -->
 		<bcel.version>5.2</bcel.version>
-		<tycho.version>0.20.0</tycho.version>
+		<tycho.version>0.23.0</tycho.version>
 		
 		<!-- Absolut paths for providing startup arguments to the JVM -->
 		<otj.runtime.location>${settings.localRepository}/org/eclipse/objectteams/objectteams-runtime/${otj.version}/objectteams-runtime-${otj.version}.jar</otj.runtime.location>
@@ -219,7 +219,7 @@
 				<plugin>
 					<groupId>org.apache.maven.plugins</groupId>
 					<artifactId>maven-site-plugin</artifactId>
-					<version>3.1</version>
+					<version>3.3</version>
 				</plugin>
 				<plugin>
 	        		<groupId>org.apache.maven.plugins</groupId>
diff --git a/maven/infrastructure/parent-pom/src/site/apt/usage.apt b/maven/infrastructure/parent-pom/src/site/apt/usage.apt
index f31be18..3cd2dae 100644
--- a/maven/infrastructure/parent-pom/src/site/apt/usage.apt
+++ b/maven/infrastructure/parent-pom/src/site/apt/usage.apt
@@ -3,7 +3,7 @@
 	------
 	Olaf Otto & Stephan Herrmann
 	------
-	2014-06-15
+	2015-06-09
 	------
 
 Using the Object Teams Parent POM
@@ -33,7 +33,7 @@
 	<parent>
 		<groupId>org.eclipse.objectteams</groupId>
 		<artifactId>objectteams-parent-pom</artifactId>
-		<version>2.3.0</version>
+		<version>2.4.0</version>
 	</parent>
 +-----
 
diff --git a/maven/testproject/pom.xml b/maven/testproject/pom.xml
index 22f75b9..5cfb1ca 100644
--- a/maven/testproject/pom.xml
+++ b/maven/testproject/pom.xml
@@ -5,13 +5,13 @@
 	<parent>
 		<groupId>org.eclipse.objectteams</groupId>
 		<artifactId>objectteams-parent-pom</artifactId>
-		<version>2.3.0</version>
+		<version>2.4.0</version>
 	</parent>
 
 	<packaging>jar</packaging>
         
 	<artifactId>objectteams-compile-test</artifactId>
-	<version>1.0.4</version>
+	<version>1.1.0</version>
 	<name>Object Teams test project</name>
 
 	<!-- simply repeat this declaration from the parent pom, otherwise Maven duplicates the artifactId in the path -->
@@ -27,7 +27,7 @@
 			<comments>
 				This file is part of "Object Teams Development Tooling"-Software
 
-				Copyright 2010, 2014 GK Software AG and others.
+				Copyright 2010, 2015 GK Software AG and others.
 				All rights reserved. This program and the accompanying materials
 				are made available under the terms of the Eclipse Public License v1.0
 				which accompanies this distribution, and is available at
diff --git a/maven/testproject/src/site/apt/usage.apt b/maven/testproject/src/site/apt/usage.apt
index 6ed5bf0..34c6e14 100644
--- a/maven/testproject/src/site/apt/usage.apt
+++ b/maven/testproject/src/site/apt/usage.apt
@@ -3,7 +3,7 @@
 	------
 	Olaf Otto & Stephan Herrmann
 	------
-	2014-06-15
+	2015-06-09
 	------
 
 Using Object Teams with Maven3
@@ -33,7 +33,7 @@
 	<parent>
 		<groupId>org.eclipse.objectteams</groupId>
 		<artifactId>objectteams-parent-pom</artifactId>
-		<version>2.3.0</version>
+		<version>2.4.0</version>
 	</parent>
 +-----