diff --git a/pom.xml b/pom.xml
index 123db23..c32b5f2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -2,7 +2,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>org.hmx</groupId>
 	<artifactId>scitos</artifactId>
-	<version>2.3.1-SNAPSHOT</version>
+	<version>2.3.1</version>
 	<packaging>pom</packaging>
 	<name>scitos</name>
 	<description>parent project of SciToS</description>
@@ -27,11 +27,11 @@
         <connection>scm:git:ssh://git@github.com/scientific-tool-set/scitos.git</connection>
         <developerConnection>scm:git:ssh://git@github.com/scientific-tool-set/scitos.git</developerConnection>
         <url>https://github.com/scientific-tool-set/scitos</url>
-        <tag>HEAD</tag>
+        <tag>v2.3.1</tag>
     </scm>
 
 	<properties>
-		<scitos.version>2.3.1-SNAPSHOT</scitos.version>
+		<scitos.version>2.3.1</scitos.version>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 	</properties>
 	<build>
diff --git a/scitos.ais/pom.xml b/scitos.ais/pom.xml
index fbbff01..8ff9143 100644
--- a/scitos.ais/pom.xml
+++ b/scitos.ais/pom.xml
@@ -3,7 +3,7 @@
 	<parent>
 		<groupId>org.hmx</groupId>
 		<artifactId>scitos</artifactId>
-		<version>2.3.1-SNAPSHOT</version>
+		<version>2.3.1</version>
 	</parent>
 	<artifactId>scitos.ais</artifactId>
 	<packaging>pom</packaging>
diff --git a/scitos.ais/scitos.ais.core/pom.xml b/scitos.ais/scitos.ais.core/pom.xml
index 74169b6..975ab81 100644
--- a/scitos.ais/scitos.ais.core/pom.xml
+++ b/scitos.ais/scitos.ais.core/pom.xml
@@ -3,7 +3,7 @@
 	<parent>
 		<groupId>org.hmx</groupId>
 		<artifactId>scitos.ais</artifactId>
-		<version>2.3.1-SNAPSHOT</version>
+		<version>2.3.1</version>
 	</parent>
 	<artifactId>scitos.ais.core</artifactId>
 	<name>scitos.ais.core</name>
diff --git a/scitos.ais/scitos.ais.domain/pom.xml b/scitos.ais/scitos.ais.domain/pom.xml
index dad166a..7d4d097 100644
--- a/scitos.ais/scitos.ais.domain/pom.xml
+++ b/scitos.ais/scitos.ais.domain/pom.xml
@@ -3,7 +3,7 @@
 	<parent>
 		<groupId>org.hmx</groupId>
 		<artifactId>scitos.ais</artifactId>
-		<version>2.3.1-SNAPSHOT</version>
+		<version>2.3.1</version>
 	</parent>
 	<artifactId>scitos.ais.domain</artifactId>
 	<description>domain project of the SciToS module AIS</description>
diff --git a/scitos.ais/scitos.ais.view/pom.xml b/scitos.ais/scitos.ais.view/pom.xml
index 7b5ac88..e93a7a8 100644
--- a/scitos.ais/scitos.ais.view/pom.xml
+++ b/scitos.ais/scitos.ais.view/pom.xml
@@ -3,7 +3,7 @@
 	<parent>
 		<groupId>org.hmx</groupId>
 		<artifactId>scitos.ais</artifactId>
-		<version>2.3.1-SNAPSHOT</version>
+		<version>2.3.1</version>
 	</parent>
 	<artifactId>scitos.ais.view</artifactId>
 	<name>scitos.ais.view</name>
diff --git a/scitos.core/pom.xml b/scitos.core/pom.xml
index 699ceca..8567908 100644
--- a/scitos.core/pom.xml
+++ b/scitos.core/pom.xml
@@ -3,7 +3,7 @@
 	<parent>
 		<groupId>org.hmx</groupId>
 		<artifactId>scitos</artifactId>
-		<version>2.3.1-SNAPSHOT</version>
+		<version>2.3.1</version>
 	</parent>
 	<artifactId>scitos.core</artifactId>
 	<name>scitos.core</name>
diff --git a/scitos.distribution/pom.xml b/scitos.distribution/pom.xml
index cbd467c..da7fce7 100644
--- a/scitos.distribution/pom.xml
+++ b/scitos.distribution/pom.xml
@@ -3,7 +3,7 @@
 	<parent>
 		<groupId>org.hmx</groupId>
 		<artifactId>scitos</artifactId>
-		<version>2.3.1-SNAPSHOT</version>
+		<version>2.3.1</version>
 	</parent>
 	<artifactId>scitos.distribution</artifactId>
 
diff --git a/scitos.domain/pom.xml b/scitos.domain/pom.xml
index 3c7d06b..0b1ea1c 100644
--- a/scitos.domain/pom.xml
+++ b/scitos.domain/pom.xml
@@ -3,7 +3,7 @@
 	<parent>
 		<groupId>org.hmx</groupId>
 		<artifactId>scitos</artifactId>
-		<version>2.3.1-SNAPSHOT</version>
+		<version>2.3.1</version>
 	</parent>
 	<artifactId>scitos.domain</artifactId>
 	<name>scitos.domain</name>
diff --git a/scitos.hmx/pom.xml b/scitos.hmx/pom.xml
index 89ec194..95b9c74 100644
--- a/scitos.hmx/pom.xml
+++ b/scitos.hmx/pom.xml
@@ -3,7 +3,7 @@
 	<parent>
 		<groupId>org.hmx</groupId>
 		<artifactId>scitos</artifactId>
-		<version>2.3.1-SNAPSHOT</version>
+		<version>2.3.1</version>
 	</parent>
 	<artifactId>scitos.hmx</artifactId>
 	<packaging>pom</packaging>
diff --git a/scitos.hmx/scitos.hmx.core/pom.xml b/scitos.hmx/scitos.hmx.core/pom.xml
index 111406e..c0aef41 100644
--- a/scitos.hmx/scitos.hmx.core/pom.xml
+++ b/scitos.hmx/scitos.hmx.core/pom.xml
@@ -3,7 +3,7 @@
 	<parent>
 		<groupId>org.hmx</groupId>
 		<artifactId>scitos.hmx</artifactId>
-		<version>2.3.1-SNAPSHOT</version>
+		<version>2.3.1</version>
 	</parent>
 	<artifactId>scitos.hmx.core</artifactId>
 	<name>scitos.hmx.core</name>
diff --git a/scitos.hmx/scitos.hmx.domain/pom.xml b/scitos.hmx/scitos.hmx.domain/pom.xml
index 7eb9baf..1b89b7f 100644
--- a/scitos.hmx/scitos.hmx.domain/pom.xml
+++ b/scitos.hmx/scitos.hmx.domain/pom.xml
@@ -3,7 +3,7 @@
 	<parent>
 		<groupId>org.hmx</groupId>
 		<artifactId>scitos.hmx</artifactId>
-		<version>2.3.1-SNAPSHOT</version>
+		<version>2.3.1</version>
 	</parent>
 	<artifactId>scitos.hmx.domain</artifactId>
 	<description>domain project of the SciToS module HmX</description>
diff --git a/scitos.hmx/scitos.hmx.view/pom.xml b/scitos.hmx/scitos.hmx.view/pom.xml
index f108fcf..88e11da 100644
--- a/scitos.hmx/scitos.hmx.view/pom.xml
+++ b/scitos.hmx/scitos.hmx.view/pom.xml
@@ -3,7 +3,7 @@
 	<parent>
 		<groupId>org.hmx</groupId>
 		<artifactId>scitos.hmx</artifactId>
-		<version>2.3.1-SNAPSHOT</version>
+		<version>2.3.1</version>
 	</parent>
 	<artifactId>scitos.hmx.view</artifactId>
 	<name>scitos.hmx.view</name>
diff --git a/scitos.view/pom.xml b/scitos.view/pom.xml
index 7f9726d..ff44436 100644
--- a/scitos.view/pom.xml
+++ b/scitos.view/pom.xml
@@ -3,7 +3,7 @@
 	<parent>
 		<groupId>org.hmx</groupId>
 		<artifactId>scitos</artifactId>
-		<version>2.3.1-SNAPSHOT</version>
+		<version>2.3.1</version>
 	</parent>
 	<artifactId>scitos.view</artifactId>
 	<name>scitos.view</name>